/* DWARF debugging format support for GDB.
- Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
- 2001, 2002
- Free Software Foundation, Inc.
+
+ Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
+ 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
+
Written by Fred Fish at Cygnus Support. Portions based on dbxread.c,
mipsread.c, coffread.c, and dwarfread.c from a Data General SVR4 gdb port.
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+/*
+ If you are looking for DWARF-2 support, you are in the wrong file.
+ Go look in dwarf2read.c. This file is for the original DWARF.
+
+ DWARF (also known as DWARF-1) is headed for obsoletion.
+
+ In gcc 3.2.1, these targets prefer dwarf-1:
+
+ i[34567]86-sequent-ptx4* # TD-R2
+ i[34567]86-sequent-sysv4* # TD-R2
+ i[34567]86-dg-dgux* # obsolete in gcc 3.2.1, to be removed in 3.3
+ m88k-dg-dgux* # TD-R2
+ mips-sni-sysv4 # TD-R2
+ sparc-hal-solaris2* # TD-R2
+
+ Configurations marked with "# TD-R2" are on Zach Weinberg's list
+ of "Target Deprecation, Round 2". This is a candidate list of
+ targets to be deprecated in gcc 3.3 and removed in gcc 3.4.
+
+ http://gcc.gnu.org/ml/gcc/2002-12/msg00702.html
+
+ gcc 2.95.3 had many configurations which prefer dwarf-1.
+ We may have to support dwarf-1 as long as we support gcc 2.95.3.
+ This could use more analysis.
+
+ DG/UX (Data General Unix) used dwarf-1 for its native format.
+ DG/UX uses gcc for its system C compiler, but they have their
+ own linker and their own debuggers.
+
+ Takis Psarogiannakopoulos has a complete gnu toolchain for DG/UX
+ with gcc 2.95.3, gdb 5.1, and debug formats of dwarf-2 and stabs.
+ For more info, see PR gdb/979 and PR gdb/1013; also:
+
+ http://sources.redhat.com/ml/gdb/2003-02/msg00074.html
+
+ There may be non-gcc compilers that still emit dwarf-1.
+
+ -- chastain 2003-02-04
+*/
+
/*
FIXME: Do we need to generate dependencies in partial symtabs?
/* Forward declarations of static functions so we don't have to worry
about ordering within this file. */
-static void free_utypes (PTR);
+static void free_utypes (void *);
static int attribute_size (unsigned int);
static void handle_producer (char *);
-static void
-read_file_scope (struct dieinfo *, char *, char *, struct objfile *);
+static void read_file_scope (struct dieinfo *, char *, char *,
+ struct objfile *);
-static void
-read_func_scope (struct dieinfo *, char *, char *, struct objfile *);
+static void read_func_scope (struct dieinfo *, char *, char *,
+ struct objfile *);
-static void
-read_lexical_block_scope (struct dieinfo *, char *, char *, struct objfile *);
+static void read_lexical_block_scope (struct dieinfo *, char *, char *,
+ struct objfile *);
static void scan_partial_symbols (char *, char *, struct objfile *);
-static void
-scan_compilation_units (char *, char *, file_ptr, file_ptr, struct objfile *);
+static void scan_compilation_units (char *, char *, file_ptr, file_ptr,
+ struct objfile *);
static void add_partial_symbol (struct dieinfo *, struct objfile *);
static void process_dies (char *, char *, struct objfile *);
-static void
-read_structure_scope (struct dieinfo *, char *, char *, struct objfile *);
+static void read_structure_scope (struct dieinfo *, char *, char *,
+ struct objfile *);
static struct type *decode_array_element_type (char *);
static void read_subroutine_type (struct dieinfo *, char *, char *);
-static void
-read_enumeration (struct dieinfo *, char *, char *, struct objfile *);
+static void read_enumeration (struct dieinfo *, char *, char *,
+ struct objfile *);
static struct type *struct_type (struct dieinfo *, char *, char *,
struct objfile *);
static struct symbol *new_symbol (struct dieinfo *, struct objfile *);
-static void
-synthesize_typedef (struct dieinfo *, struct objfile *, struct type *);
+static void synthesize_typedef (struct dieinfo *, struct objfile *,
+ struct type *);
static int locval (struct dieinfo *);
read_lexical_block_scope (struct dieinfo *dip, char *thisdie, char *enddie,
struct objfile *objfile)
{
- register struct context_stack *new;
+ struct context_stack *new;
push_context (0, dip->at_low_pc);
process_dies (thisdie + dip->die_length, enddie, objfile);
SYNOPSIS
- static void free_utypes (PTR dummy)
+ static void free_utypes (void *dummy)
DESCRIPTION
*/
static void
-free_utypes (PTR dummy)
+free_utypes (void *dummy)
{
xfree (utypes);
utypes = NULL;
}
else if (dip->at_user_def_type)
{
- if ((type = lookup_utype (dip->at_user_def_type)) == NULL)
+ type = lookup_utype (dip->at_user_def_type);
+ if (type == NULL)
{
type = alloc_utype (dip->at_user_def_type, NULL);
}
char *nextdie;
int anonymous_size;
- if ((type = lookup_utype (dip->die_ref)) == NULL)
+ type = lookup_utype (dip->die_ref);
+ if (type == NULL)
{
/* No forward references created an empty type, so install one now */
type = alloc_utype (dip->die_ref, NULL);
switch (mbr.die_tag)
{
case TAG_member:
+ /* Static fields can be either TAG_global_variable (GCC) or else
+ TAG_member with no location (Diab). We could treat the latter like
+ the former... but since we don't support the former, just avoid
+ crashing on the latter for now. */
+ if (mbr.at_location == NULL)
+ break;
+
/* Get space to record the next field's data. */
new = (struct nextfield *) alloca (sizeof (struct nextfield));
new->next = list;
attribute = target_to_host (scan, SIZEOF_ATTRIBUTE, GET_UNSIGNED,
current_objfile);
scan += SIZEOF_ATTRIBUTE;
- if ((nbytes = attribute_size (attribute)) == -1)
+ nbytes = attribute_size (attribute);
+ if (nbytes == -1)
{
bad_array_element_type_complaint (DIE_ID, DIE_NAME, attribute);
typep = dwarf_fundamental_type (current_objfile, FT_INTEGER);
case AT_user_def_type:
die_ref = target_to_host (scan, nbytes, GET_UNSIGNED,
current_objfile);
- if ((typep = lookup_utype (die_ref)) == NULL)
+ typep = lookup_utype (die_ref);
+ if (typep == NULL)
{
typep = alloc_utype (die_ref, NULL);
}
"DIE @ 0x%x \"%s\", array not row major; not handled correctly",
DIE_ID, DIE_NAME);
}
- if ((sub = dip->at_subscr_data) != NULL)
+ sub = dip->at_subscr_data;
+ if (sub != NULL)
{
nbytes = attribute_size (AT_subscr_data);
blocksz = target_to_host (sub, nbytes, GET_UNSIGNED, current_objfile);
subend = sub + nbytes + blocksz;
sub += nbytes;
type = decode_subscript_data_item (sub, subend);
- if ((utype = lookup_utype (dip->die_ref)) == NULL)
+ utype = lookup_utype (dip->die_ref);
+ if (utype == NULL)
{
/* Install user defined type that has not been referenced yet. */
alloc_utype (dip->die_ref, type);
struct type *utype;
type = decode_die_type (dip);
- if ((utype = lookup_utype (dip->die_ref)) == NULL)
+ utype = lookup_utype (dip->die_ref);
+ if (utype == NULL)
{
utype = lookup_pointer_type (type);
alloc_utype (dip->die_ref, utype);
/* Check to see if we already have a partially constructed user
defined type for this DIE, from a forward reference. */
- if ((ftype = lookup_utype (dip->die_ref)) == NULL)
+ ftype = lookup_utype (dip->die_ref);
+ if (ftype == NULL)
{
/* This is the first reference to one of these types. Make
a new one and place it in the user defined types. */
of the enumeration and return a type pointer for the enumeration.
At the same time, for each member of the enumeration, create a
- symbol for it with namespace VAR_NAMESPACE and class LOC_CONST,
+ symbol for it with domain VAR_DOMAIN and class LOC_CONST,
and give it the type of the enumeration itself.
NOTES
int nbytes;
int unsigned_enum = 1;
- if ((type = lookup_utype (dip->die_ref)) == NULL)
+ type = lookup_utype (dip->die_ref);
+ if (type == NULL)
{
/* No forward references created an empty type, so install one now */
type = alloc_utype (dip->die_ref, NULL);
{
TYPE_LENGTH (type) = dip->at_byte_size;
}
- if ((scan = dip->at_element_list) != NULL)
+ scan = dip->at_element_list;
+ if (scan != NULL)
{
if (dip->short_element_list)
{
sym = (struct symbol *) obstack_alloc (&objfile->symbol_obstack,
sizeof (struct symbol));
memset (sym, 0, sizeof (struct symbol));
- SYMBOL_NAME (sym) = create_name (list->field.name,
+ DEPRECATED_SYMBOL_NAME (sym) = create_name (list->field.name,
&objfile->symbol_obstack);
SYMBOL_INIT_LANGUAGE_SPECIFIC (sym, cu_language);
- SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
+ SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
SYMBOL_CLASS (sym) = LOC_CONST;
SYMBOL_TYPE (sym) = type;
SYMBOL_VALUE (sym) = FIELD_BITPOS (list->field);
read_func_scope (struct dieinfo *dip, char *thisdie, char *enddie,
struct objfile *objfile)
{
- register struct context_stack *new;
+ struct context_stack *new;
/* AT_name is absent if the function is described with an
AT_abstract_origin tag.
if (LNFOFF (pst))
{
if (bfd_seek (abfd, LNFOFF (pst), SEEK_SET) ||
- (bfd_bread ((PTR) lnsizedata, sizeof (lnsizedata), abfd)
+ (bfd_bread (lnsizedata, sizeof (lnsizedata), abfd)
!= sizeof (lnsizedata)))
{
error ("can't read DWARF line number table size");
wrap_here ("");
gdb_flush (gdb_stdout);
}
- sort_symtab_syms (pst->symtab);
do_cleanups (old_chain);
}
pst->readin = 1;
unsigned short blocksz;
int nbytes;
- if ((scan = dip->at_element_list) != NULL)
+ scan = dip->at_element_list;
+ if (scan != NULL)
{
if (dip->short_element_list)
{
while (scan < listend)
{
scan += TARGET_FT_LONG_SIZE (objfile);
- add_psymbol_to_list (scan, strlen (scan), VAR_NAMESPACE, LOC_CONST,
+ add_psymbol_to_list (scan, strlen (scan), VAR_DOMAIN, LOC_CONST,
&objfile->static_psymbols, 0, 0, cu_language,
objfile);
scan += strlen (scan) + 1;
{
case TAG_global_subroutine:
add_psymbol_to_list (dip->at_name, strlen (dip->at_name),
- VAR_NAMESPACE, LOC_BLOCK,
+ VAR_DOMAIN, LOC_BLOCK,
&objfile->global_psymbols,
0, dip->at_low_pc, cu_language, objfile);
break;
case TAG_global_variable:
add_psymbol_to_list (dip->at_name, strlen (dip->at_name),
- VAR_NAMESPACE, LOC_STATIC,
+ VAR_DOMAIN, LOC_STATIC,
&objfile->global_psymbols,
0, 0, cu_language, objfile);
break;
case TAG_subroutine:
add_psymbol_to_list (dip->at_name, strlen (dip->at_name),
- VAR_NAMESPACE, LOC_BLOCK,
+ VAR_DOMAIN, LOC_BLOCK,
&objfile->static_psymbols,
0, dip->at_low_pc, cu_language, objfile);
break;
case TAG_local_variable:
add_psymbol_to_list (dip->at_name, strlen (dip->at_name),
- VAR_NAMESPACE, LOC_STATIC,
+ VAR_DOMAIN, LOC_STATIC,
&objfile->static_psymbols,
0, 0, cu_language, objfile);
break;
case TAG_typedef:
add_psymbol_to_list (dip->at_name, strlen (dip->at_name),
- VAR_NAMESPACE, LOC_TYPEDEF,
+ VAR_DOMAIN, LOC_TYPEDEF,
&objfile->static_psymbols,
0, 0, cu_language, objfile);
break;
if (!dip->has_at_byte_size)
break;
add_psymbol_to_list (dip->at_name, strlen (dip->at_name),
- STRUCT_NAMESPACE, LOC_TYPEDEF,
+ STRUCT_DOMAIN, LOC_TYPEDEF,
&objfile->static_psymbols,
0, 0, cu_language, objfile);
if (cu_language == language_cplus)
{
/* For C++, these implicitly act as typedefs as well. */
add_psymbol_to_list (dip->at_name, strlen (dip->at_name),
- VAR_NAMESPACE, LOC_TYPEDEF,
+ VAR_DOMAIN, LOC_TYPEDEF,
&objfile->static_psymbols,
0, 0, cu_language, objfile);
}
sizeof (struct symbol));
OBJSTAT (objfile, n_syms++);
memset (sym, 0, sizeof (struct symbol));
- SYMBOL_NAME (sym) = create_name (dip->at_name,
- &objfile->symbol_obstack);
/* default assumptions */
- SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
+ SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
SYMBOL_CLASS (sym) = LOC_STATIC;
SYMBOL_TYPE (sym) = decode_die_type (dip);
C++ symbol lookups by a factor of about 20. */
SYMBOL_LANGUAGE (sym) = cu_language;
- SYMBOL_INIT_DEMANGLED_NAME (sym, &objfile->symbol_obstack);
+ SYMBOL_SET_NAMES (sym, dip->at_name, strlen (dip->at_name), objfile);
switch (dip->die_tag)
{
case TAG_label:
case TAG_union_type:
case TAG_enumeration_type:
SYMBOL_CLASS (sym) = LOC_TYPEDEF;
- SYMBOL_NAMESPACE (sym) = STRUCT_NAMESPACE;
+ SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN;
add_symbol_to_list (sym, list_in_scope);
break;
case TAG_typedef:
SYMBOL_CLASS (sym) = LOC_TYPEDEF;
- SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
+ SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
add_symbol_to_list (sym, list_in_scope);
break;
default:
obstack_alloc (&objfile->symbol_obstack, sizeof (struct symbol));
OBJSTAT (objfile, n_syms++);
memset (sym, 0, sizeof (struct symbol));
- SYMBOL_NAME (sym) = create_name (dip->at_name,
+ DEPRECATED_SYMBOL_NAME (sym) = create_name (dip->at_name,
&objfile->symbol_obstack);
SYMBOL_INIT_LANGUAGE_SPECIFIC (sym, cu_language);
SYMBOL_TYPE (sym) = type;
SYMBOL_CLASS (sym) = LOC_TYPEDEF;
- SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
+ SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
add_symbol_to_list (sym, list_in_scope);
}
}
nbytes = attribute_size (AT_user_def_type);
die_ref = target_to_host (modifiers, nbytes, GET_UNSIGNED,
current_objfile);
- if ((typep = lookup_utype (die_ref)) == NULL)
+ typep = lookup_utype (die_ref);
+ if (typep == NULL)
{
typep = alloc_utype (die_ref, NULL);
}
DIE_ID, DIE_NAME); /* FIXME */
break;
default:
- if (!(MOD_lo_user <= (unsigned char) modifier
+ if (!(MOD_lo_user <= (unsigned char) modifier))
+#if 0
+/* This part of the test would always be true, and it triggers a compiler
+ warning. */
&& (unsigned char) modifier <= MOD_hi_user))
+#endif
{
complaint (&symfile_complaints,
"DIE @ 0x%x \"%s\", unknown type modifier %u", DIE_ID,
{
attr = target_to_host (diep, SIZEOF_ATTRIBUTE, GET_UNSIGNED, objfile);
diep += SIZEOF_ATTRIBUTE;
- if ((nbytes = attribute_size (attr)) == -1)
+ nbytes = attribute_size (attr);
+ if (nbytes == -1)
{
complaint (&symfile_complaints,
"DIE @ 0x%x \"%s\", unknown attribute length, skipped remaining attributes",
projects / deliverable / binutils-gdb.git / blobdiff