/* The number of .debug_types-related CUs. */
int n_type_units;
- /* The .debug_types-related CUs (TUs). */
+ /* The .debug_types-related CUs (TUs).
+ This is stored in malloc space because we may realloc it. */
struct signatured_type **all_type_units;
/* The number of entries in all_type_unit_groups. */
/* Non-zero if this CU is from the .dwz file. */
unsigned int is_dwz : 1;
+ /* Non-zero if reading a TU directly from a DWO file, bypassing the stub.
+ This flag is only valid if is_debug_types is true.
+ We can't read a CU directly from a DWO file: There are required
+ attributes in the stub. */
+ unsigned int reading_dwo_directly : 1;
+
+ /* Non-zero if the TU has been read.
+ This is used to assist the "Stay in DWO Optimization" for Fission:
+ When reading a DWO, it's faster to read TUs from the DWO instead of
+ fetching them from random other DWOs (due to comdat folding).
+ If the TU has already been read, the optimization is unnecessary
+ (and unwise - we don't want to change where gdb thinks the TU lives
+ "midflight").
+ This flag is only valid if is_debug_types is true. */
+ unsigned int tu_read : 1;
+
/* The section this CU/TU lives in.
If the DIE refers to a DWO file, this is always the original die,
not the DWO file. */
The first time we encounter this type we fully read it in and install it
in the symbol tables. Subsequent times we only need the type. */
struct type *type;
+
+ /* Containing DWO unit.
+ This field is valid iff per_cu.reading_dwo_directly. */
+ struct dwo_unit *dwo_unit;
};
typedef struct signatured_type *sig_type_ptr;
/* Name of the file. */
const char *name;
- /* The bfd, when the file is open. Otherwise this is NULL. */
+ /* The bfd. */
bfd *dbfd;
/* Section info for this file. */
/* The end of the buffer. */
const gdb_byte *buffer_end;
+
+ /* The value of the DW_AT_comp_dir attribute. */
+ const char *comp_dir;
};
/* Type of function passed to init_cutu_and_read_dies, et.al. */
static struct symbol *new_symbol_full (struct die_info *, struct type *,
struct dwarf2_cu *, struct symbol *);
-static void dwarf2_const_value (struct attribute *, struct symbol *,
+static void dwarf2_const_value (const struct attribute *, struct symbol *,
struct dwarf2_cu *);
-static void dwarf2_const_value_attr (struct attribute *attr,
+static void dwarf2_const_value_attr (const struct attribute *attr,
struct type *type,
const char *name,
struct obstack *obstack,
static struct type *die_containing_type (struct die_info *,
struct dwarf2_cu *);
-static struct type *lookup_die_type (struct die_info *, struct attribute *,
+static struct type *lookup_die_type (struct die_info *, const struct attribute *,
struct dwarf2_cu *);
static struct type *read_type_die (struct die_info *, struct dwarf2_cu *);
static void store_in_ref_table (struct die_info *,
struct dwarf2_cu *);
-static int is_ref_attr (struct attribute *);
-
-static sect_offset dwarf2_get_ref_die_offset (struct attribute *);
+static sect_offset dwarf2_get_ref_die_offset (const struct attribute *);
-static LONGEST dwarf2_get_attr_constant_value (struct attribute *, int);
+static LONGEST dwarf2_get_attr_constant_value (const struct attribute *, int);
static struct die_info *follow_die_ref_or_sig (struct die_info *,
- struct attribute *,
+ const struct attribute *,
struct dwarf2_cu **);
static struct die_info *follow_die_ref (struct die_info *,
- struct attribute *,
+ const struct attribute *,
struct dwarf2_cu **);
static struct die_info *follow_die_sig (struct die_info *,
- struct attribute *,
+ const struct attribute *,
struct dwarf2_cu **);
static struct type *get_signatured_type (struct die_info *, ULONGEST,
struct dwarf2_cu *);
static struct type *get_DW_AT_signature_type (struct die_info *,
- struct attribute *,
+ const struct attribute *,
struct dwarf2_cu *);
static void load_full_type_unit (struct dwarf2_per_cu_data *per_cu);
static void read_signatured_type (struct signatured_type *);
static struct type_unit_group *get_type_unit_group
- (struct dwarf2_cu *, struct attribute *);
+ (struct dwarf2_cu *, const struct attribute *);
static void build_type_unit_groups (die_reader_func_ftype *, void *);
static void dwarf_decode_macros (struct dwarf2_cu *, unsigned int,
const char *, int);
-static int attr_form_is_block (struct attribute *);
+static int attr_form_is_block (const struct attribute *);
+
+static int attr_form_is_section_offset (const struct attribute *);
-static int attr_form_is_section_offset (struct attribute *);
+static int attr_form_is_constant (const struct attribute *);
-static int attr_form_is_constant (struct attribute *);
+static int attr_form_is_ref (const struct attribute *);
static void fill_in_loclist_baton (struct dwarf2_cu *cu,
struct dwarf2_loclist_baton *baton,
- struct attribute *attr);
+ const struct attribute *attr);
-static void dwarf2_symbol_mark_computed (struct attribute *attr,
+static void dwarf2_symbol_mark_computed (const struct attribute *attr,
struct symbol *sym,
struct dwarf2_cu *cu,
int is_block);
static htab_t allocate_dwo_unit_table (struct objfile *objfile);
+static struct dwo_unit *lookup_dwo_in_dwp
+ (struct dwp_file *dwp_file, const struct dwp_hash_table *htab,
+ const char *comp_dir, ULONGEST signature, int is_debug_types);
+
+static struct dwp_file *get_dwp_file (void);
+
static struct dwo_unit *lookup_dwo_comp_unit
(struct dwarf2_per_cu_data *, const char *, const char *, ULONGEST);
}
}
-/* Open the separate '.dwz' debug file, if needed. Error if the file
- cannot be found. */
+/* Open the separate '.dwz' debug file, if needed. Return NULL if
+ there is no .gnu_debugaltlink section in the file. Error if there
+ is such a section but the file cannot be found. */
static struct dwz_file *
dwarf2_get_dwz_file (void)
{
- bfd *abfd, *dwz_bfd;
- asection *section;
- gdb_byte *data;
+ bfd *dwz_bfd;
+ char *data;
struct cleanup *cleanup;
const char *filename;
struct dwz_file *result;
+ unsigned long buildid;
if (dwarf2_per_objfile->dwz_file != NULL)
return dwarf2_per_objfile->dwz_file;
- abfd = dwarf2_per_objfile->objfile->obfd;
- section = bfd_get_section_by_name (abfd, ".gnu_debugaltlink");
- if (section == NULL)
- error (_("could not find '.gnu_debugaltlink' section"));
- if (!bfd_malloc_and_get_section (abfd, section, &data))
- error (_("could not read '.gnu_debugaltlink' section: %s"),
- bfd_errmsg (bfd_get_error ()));
+ bfd_set_error (bfd_error_no_error);
+ data = bfd_get_alt_debug_link_info (dwarf2_per_objfile->objfile->obfd,
+ &buildid);
+ if (data == NULL)
+ {
+ if (bfd_get_error () == bfd_error_no_error)
+ return NULL;
+ error (_("could not read '.gnu_debugaltlink' section: %s"),
+ bfd_errmsg (bfd_get_error ()));
+ }
cleanup = make_cleanup (xfree, data);
filename = (const char *) data;
dwarf2_per_objfile->n_type_units = elements / 3;
dwarf2_per_objfile->all_type_units
- = obstack_alloc (&objfile->objfile_obstack,
- dwarf2_per_objfile->n_type_units
- * sizeof (struct signatured_type *));
+ = xmalloc (dwarf2_per_objfile->n_type_units
+ * sizeof (struct signatured_type *));
sig_types_hash = allocate_signatured_type_table (objfile);
struct mapped_index local_map, *map;
const gdb_byte *cu_list, *types_list, *dwz_list = NULL;
offset_type cu_list_elements, types_list_elements, dwz_list_elements = 0;
+ struct dwz_file *dwz;
if (!read_index_from_section (objfile, objfile->name,
use_deprecated_index_sections,
/* If there is a .dwz file, read it so we can get its CU list as
well. */
- if (bfd_get_section_by_name (objfile->obfd, ".gnu_debugaltlink") != NULL)
+ dwz = dwarf2_get_dwz_file ();
+ if (dwz != NULL)
{
- struct dwz_file *dwz = dwarf2_get_dwz_file ();
struct mapped_index dwz_map;
const gdb_byte *dwz_types_ignore;
offset_type dwz_types_elements_ignore;
offset_type cu_index_and_attrs =
MAYBE_SWAP (iter->vec[iter->next + 1]);
offset_type cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs);
- struct dwarf2_per_cu_data *per_cu = dw2_get_cu (cu_index);
+ struct dwarf2_per_cu_data *per_cu;
int want_static = iter->block_index != GLOBAL_BLOCK;
/* This value is only valid for index versions >= 7. */
int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs);
(iter->index->version >= 7
&& symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE);
+ /* Don't crash on bad data. */
+ if (cu_index >= (dwarf2_per_objfile->n_comp_units
+ + dwarf2_per_objfile->n_type_units))
+ {
+ complaint (&symfile_complaints,
+ _(".gdb_index entry has bad CU index"
+ " [in module %s]"), dwarf2_per_objfile->objfile->name);
+ continue;
+ }
+
+ per_cu = dw2_get_cu (cu_index);
+
/* Skip if already read in. */
if (per_cu->v.quick->symtab)
continue;
}
static void
-dw2_relocate (struct objfile *objfile, struct section_offsets *new_offsets,
- struct section_offsets *delta)
+dw2_relocate (struct objfile *objfile,
+ const struct section_offsets *new_offsets,
+ const struct section_offsets *delta)
{
/* There's nothing to relocate here. */
}
}
}
-/* A helper function for dw2_find_symbol_file that finds the primary
- file name for a given CU. This is a die_reader_func. */
-
-static void
-dw2_get_primary_filename_reader (const struct die_reader_specs *reader,
- const gdb_byte *info_ptr,
- struct die_info *comp_unit_die,
- int has_children,
- void *data)
-{
- const char **result_ptr = data;
- struct dwarf2_cu *cu = reader->cu;
- struct attribute *attr;
-
- attr = dwarf2_attr (comp_unit_die, DW_AT_name, cu);
- if (attr == NULL)
- *result_ptr = NULL;
- else
- *result_ptr = DW_STRING (attr);
-}
-
-static const char *
-dw2_find_symbol_file (struct objfile *objfile, const char *name)
-{
- struct dwarf2_per_cu_data *per_cu;
- offset_type *vec;
- const char *filename;
-
- dw2_setup (objfile);
-
- /* index_table is NULL if OBJF_READNOW. */
- if (!dwarf2_per_objfile->index_table)
- {
- struct symtab *s;
-
- ALL_OBJFILE_PRIMARY_SYMTABS (objfile, s)
- {
- struct blockvector *bv = BLOCKVECTOR (s);
- const struct block *block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
- struct symbol *sym = lookup_block_symbol (block, name, VAR_DOMAIN);
-
- if (sym)
- {
- /* Only file extension of returned filename is recognized. */
- return SYMBOL_SYMTAB (sym)->filename;
- }
- }
- return NULL;
- }
-
- if (!find_slot_in_mapped_hash (dwarf2_per_objfile->index_table,
- name, &vec))
- return NULL;
-
- /* Note that this just looks at the very first one named NAME -- but
- actually we are looking for a function. find_main_filename
- should be rewritten so that it doesn't require a custom hook. It
- could just use the ordinary symbol tables. */
- /* vec[0] is the length, which must always be >0. */
- per_cu = dw2_get_cu (GDB_INDEX_CU_VALUE (MAYBE_SWAP (vec[1])));
-
- if (per_cu->v.quick->symtab != NULL)
- {
- /* Only file extension of returned filename is recognized. */
- return per_cu->v.quick->symtab->filename;
- }
-
- init_cutu_and_read_dies (per_cu, NULL, 0, 0,
- dw2_get_primary_filename_reader, &filename);
-
- /* Only file extension of returned filename is recognized. */
- return filename;
-}
-
static void
dw2_map_matching_symbols (const char * name, domain_enum namespace,
struct objfile *objfile, int global,
gdb_index_symbol_kind symbol_kind =
GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs);
int cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs);
-
- /* Don't crash on bad data. */
- if (cu_index >= (dwarf2_per_objfile->n_comp_units
- + dwarf2_per_objfile->n_type_units))
- continue;
-
- /* Only check the symbol's kind if it has one.
- Indices prior to version 7 don't record it. */
- if (index->version >= 7)
+ /* Only check the symbol attributes if they're present.
+ Indices prior to version 7 don't record them,
+ and indices >= 7 may elide them for certain symbols
+ (gold does this). */
+ int attrs_valid =
+ (index->version >= 7
+ && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE);
+
+ /* Only check the symbol's kind if it has one. */
+ if (attrs_valid)
{
switch (kind)
{
}
}
+ /* Don't crash on bad data. */
+ if (cu_index >= (dwarf2_per_objfile->n_comp_units
+ + dwarf2_per_objfile->n_type_units))
+ {
+ complaint (&symfile_complaints,
+ _(".gdb_index entry has bad CU index"
+ " [in module %s]"), objfile->name);
+ continue;
+ }
+
per_cu = dw2_get_cu (cu_index);
if (file_matcher == NULL || per_cu->v.quick->mark)
dw2_instantiate_symtab (per_cu);
dw2_expand_symtabs_for_function,
dw2_expand_all_symtabs,
dw2_expand_symtabs_with_fullname,
- dw2_find_symbol_file,
dw2_map_matching_symbols,
dw2_expand_symtabs_matching,
dw2_find_pc_sect_symtab,
dwarf2_per_objfile->n_type_units = htab_elements (types_htab);
dwarf2_per_objfile->all_type_units
- = obstack_alloc (&objfile->objfile_obstack,
- dwarf2_per_objfile->n_type_units
- * sizeof (struct signatured_type *));
+ = xmalloc (dwarf2_per_objfile->n_type_units
+ * sizeof (struct signatured_type *));
iter = &dwarf2_per_objfile->all_type_units[0];
htab_traverse_noresize (types_htab, add_signatured_type_cu_to_table, &iter);
gdb_assert (iter - &dwarf2_per_objfile->all_type_units[0]
return 1;
}
+/* Subroutine of lookup_dwo_signatured_type and lookup_dwp_signatured_type.
+ Fill in SIG_ENTRY with DWO_ENTRY. */
+
+static void
+fill_in_sig_entry_from_dwo_entry (struct objfile *objfile,
+ struct signatured_type *sig_entry,
+ struct dwo_unit *dwo_entry)
+{
+ /* Make sure we're not clobbering something we don't expect to. */
+ gdb_assert (! sig_entry->per_cu.queued);
+ gdb_assert (sig_entry->per_cu.cu == NULL);
+ gdb_assert (sig_entry->per_cu.v.quick != NULL);
+ gdb_assert (sig_entry->per_cu.v.quick->symtab == NULL);
+ gdb_assert (sig_entry->signature == dwo_entry->signature);
+ gdb_assert (sig_entry->type_offset_in_section.sect_off == 0);
+ gdb_assert (sig_entry->type_unit_group == NULL);
+ gdb_assert (sig_entry->dwo_unit == NULL);
+
+ sig_entry->per_cu.section = dwo_entry->section;
+ sig_entry->per_cu.offset = dwo_entry->offset;
+ sig_entry->per_cu.length = dwo_entry->length;
+ sig_entry->per_cu.reading_dwo_directly = 1;
+ sig_entry->per_cu.objfile = objfile;
+ sig_entry->type_offset_in_tu = dwo_entry->type_offset_in_tu;
+ sig_entry->dwo_unit = dwo_entry;
+}
+
+/* Subroutine of lookup_signatured_type.
+ If we haven't read the TU yet, create the signatured_type data structure
+ for a TU to be read in directly from a DWO file, bypassing the stub.
+ This is the "Stay in DWO Optimization": When there is no DWP file and we're
+ using .gdb_index, then when reading a CU we want to stay in the DWO file
+ containing that CU. Otherwise we could end up reading several other DWO
+ files (due to comdat folding) to process the transitive closure of all the
+ mentioned TUs, and that can be slow. The current DWO file will have every
+ type signature that it needs.
+ We only do this for .gdb_index because in the psymtab case we already have
+ to read all the DWOs to build the type unit groups. */
+
+static struct signatured_type *
+lookup_dwo_signatured_type (struct dwarf2_cu *cu, ULONGEST sig)
+{
+ struct objfile *objfile = dwarf2_per_objfile->objfile;
+ struct dwo_file *dwo_file;
+ struct dwo_unit find_dwo_entry, *dwo_entry;
+ struct signatured_type find_sig_entry, *sig_entry;
+
+ gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index);
+
+ /* Note: cu->dwo_unit is the dwo_unit that references this TU, not the
+ dwo_unit of the TU itself. */
+ dwo_file = cu->dwo_unit->dwo_file;
+
+ /* We only ever need to read in one copy of a signatured type.
+ Just use the global signatured_types array. If this is the first time
+ we're reading this type, replace the recorded data from .gdb_index with
+ this TU. */
+
+ if (dwarf2_per_objfile->signatured_types == NULL)
+ return NULL;
+ find_sig_entry.signature = sig;
+ sig_entry = htab_find (dwarf2_per_objfile->signatured_types, &find_sig_entry);
+ if (sig_entry == NULL)
+ return NULL;
+
+ /* We can get here with the TU already read, *or* in the process of being
+ read. Don't reassign it if that's the case. Also note that if the TU is
+ already being read, it may not have come from a DWO, the program may be
+ a mix of Fission-compiled code and non-Fission-compiled code. */
+ /* Have we already tried to read this TU? */
+ if (sig_entry->per_cu.tu_read)
+ return sig_entry;
+
+ /* Ok, this is the first time we're reading this TU. */
+ if (dwo_file->tus == NULL)
+ return NULL;
+ find_dwo_entry.signature = sig;
+ dwo_entry = htab_find (dwo_file->tus, &find_dwo_entry);
+ if (dwo_entry == NULL)
+ return NULL;
+
+ fill_in_sig_entry_from_dwo_entry (objfile, sig_entry, dwo_entry);
+ return sig_entry;
+}
+
+/* Subroutine of lookup_dwp_signatured_type.
+ Add an entry for signature SIG to dwarf2_per_objfile->signatured_types. */
+
+static struct signatured_type *
+add_type_unit (ULONGEST sig)
+{
+ struct objfile *objfile = dwarf2_per_objfile->objfile;
+ int n_type_units = dwarf2_per_objfile->n_type_units;
+ struct signatured_type *sig_type;
+ void **slot;
+
+ ++n_type_units;
+ dwarf2_per_objfile->all_type_units =
+ xrealloc (dwarf2_per_objfile->all_type_units,
+ n_type_units * sizeof (struct signatured_type *));
+ dwarf2_per_objfile->n_type_units = n_type_units;
+ sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack,
+ struct signatured_type);
+ dwarf2_per_objfile->all_type_units[n_type_units - 1] = sig_type;
+ sig_type->signature = sig;
+ sig_type->per_cu.is_debug_types = 1;
+ sig_type->per_cu.v.quick =
+ OBSTACK_ZALLOC (&objfile->objfile_obstack,
+ struct dwarf2_per_cu_quick_data);
+ slot = htab_find_slot (dwarf2_per_objfile->signatured_types,
+ sig_type, INSERT);
+ gdb_assert (*slot == NULL);
+ *slot = sig_type;
+ /* The rest of sig_type must be filled in by the caller. */
+ return sig_type;
+}
+
+/* Subroutine of lookup_signatured_type.
+ Look up the type for signature SIG, and if we can't find SIG in .gdb_index
+ then try the DWP file.
+ Normally this "can't happen", but if there's a bug in signature
+ generation and/or the DWP file is built incorrectly, it can happen.
+ Using the type directly from the DWP file means we don't have the stub
+ which has some useful attributes (e.g., DW_AT_comp_dir), but they're
+ not critical. [Eventually the stub may go away for type units anyway.] */
+
+static struct signatured_type *
+lookup_dwp_signatured_type (struct dwarf2_cu *cu, ULONGEST sig)
+{
+ struct objfile *objfile = dwarf2_per_objfile->objfile;
+ struct dwp_file *dwp_file = get_dwp_file ();
+ struct dwo_unit *dwo_entry;
+ struct signatured_type find_sig_entry, *sig_entry;
+
+ gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index);
+ gdb_assert (dwp_file != NULL);
+
+ if (dwarf2_per_objfile->signatured_types != NULL)
+ {
+ find_sig_entry.signature = sig;
+ sig_entry = htab_find (dwarf2_per_objfile->signatured_types,
+ &find_sig_entry);
+ if (sig_entry != NULL)
+ return sig_entry;
+ }
+
+ /* This is the "shouldn't happen" case.
+ Try the DWP file and hope for the best. */
+ if (dwp_file->tus == NULL)
+ return NULL;
+ dwo_entry = lookup_dwo_in_dwp (dwp_file, dwp_file->tus, NULL,
+ sig, 1 /* is_debug_types */);
+ if (dwo_entry == NULL)
+ return NULL;
+
+ sig_entry = add_type_unit (sig);
+ fill_in_sig_entry_from_dwo_entry (objfile, sig_entry, dwo_entry);
+
+ /* The caller will signal a complaint if we return NULL.
+ Here we don't return NULL but we still want to complain. */
+ complaint (&symfile_complaints,
+ _("Bad type signature %s referenced by %s at 0x%x,"
+ " coping by using copy in DWP [in module %s]"),
+ hex_string (sig),
+ cu->per_cu->is_debug_types ? "TU" : "CU",
+ cu->per_cu->offset.sect_off,
+ objfile->name);
+
+ return sig_entry;
+}
+
/* Lookup a signature based type for DW_FORM_ref_sig8.
Returns NULL if signature SIG is not present in the table.
It is up to the caller to complain about this. */
static struct signatured_type *
-lookup_signatured_type (ULONGEST sig)
+lookup_signatured_type (struct dwarf2_cu *cu, ULONGEST sig)
{
- struct signatured_type find_entry, *entry;
+ if (cu->dwo_unit
+ && dwarf2_per_objfile->using_index)
+ {
+ /* We're in a DWO/DWP file, and we're using .gdb_index.
+ These cases require special processing. */
+ if (get_dwp_file () == NULL)
+ return lookup_dwo_signatured_type (cu, sig);
+ else
+ return lookup_dwp_signatured_type (cu, sig);
+ }
+ else
+ {
+ struct signatured_type find_entry, *entry;
- if (dwarf2_per_objfile->signatured_types == NULL)
- return NULL;
- find_entry.signature = sig;
- entry = htab_find (dwarf2_per_objfile->signatured_types, &find_entry);
- return entry;
+ if (dwarf2_per_objfile->signatured_types == NULL)
+ return NULL;
+ find_entry.signature = sig;
+ entry = htab_find (dwarf2_per_objfile->signatured_types, &find_entry);
+ return entry;
+ }
}
\f
/* Low level DIE reading support. */
reader->die_section = section;
reader->buffer = section->buffer;
reader->buffer_end = section->buffer + section->size;
+ reader->comp_dir = NULL;
}
/* Subroutine of init_cutu_and_read_dies to simplify it.
STUB_COMP_UNIT_DIE is for the stub DIE, we copy over certain attributes
from it to the DIE in the DWO. If NULL we are skipping the stub.
+ STUB_COMP_DIR is similar to STUB_COMP_UNIT_DIE: When reading a TU directly
+ from the DWO file, bypassing the stub, it contains the DW_AT_comp_dir
+ attribute of the referencing CU. Exactly one of STUB_COMP_UNIT_DIE and
+ COMP_DIR must be non-NULL.
*RESULT_READER,*RESULT_INFO_PTR,*RESULT_COMP_UNIT_DIE,*RESULT_HAS_CHILDREN
are filled in with the info of the DIE from the DWO file.
ABBREV_TABLE_PROVIDED is non-zero if the caller of init_cutu_and_read_dies
struct dwo_unit *dwo_unit,
int abbrev_table_provided,
struct die_info *stub_comp_unit_die,
+ const char *stub_comp_dir,
struct die_reader_specs *result_reader,
const gdb_byte **result_info_ptr,
struct die_info **result_comp_unit_die,
int i,num_extra_attrs;
struct dwarf2_section_info *dwo_abbrev_section;
struct attribute *attr;
+ struct attribute comp_dir_attr;
struct die_info *comp_unit_die;
+ /* Both can't be provided. */
+ gdb_assert (! (stub_comp_unit_die && stub_comp_dir));
+
/* These attributes aren't processed until later:
DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges.
However, the attribute is found in the stub which we won't have later.
if (attr)
cu->ranges_base = DW_UNSND (attr);
}
+ else if (stub_comp_dir != NULL)
+ {
+ /* Reconstruct the comp_dir attribute to simplify the code below. */
+ comp_dir = (struct attribute *)
+ obstack_alloc (&cu->comp_unit_obstack, sizeof (*comp_dir));
+ comp_dir->name = DW_AT_comp_dir;
+ comp_dir->form = DW_FORM_string;
+ DW_STRING_IS_CANONICAL (comp_dir) = 0;
+ DW_STRING (comp_dir) = stub_comp_dir;
+ }
/* Set up for reading the DWO CU/TU. */
cu->dwo_unit = dwo_unit;
info_ptr,
&header_signature,
&type_offset_in_tu);
- gdb_assert (sig_type->signature == header_signature);
+ /* This is not an assert because it can be caused by bad debug info. */
+ if (sig_type->signature != header_signature)
+ {
+ error (_("Dwarf Error: signature mismatch %s vs %s while reading"
+ " TU at offset 0x%x [in module %s]"),
+ hex_string (sig_type->signature),
+ hex_string (header_signature),
+ dwo_unit->offset.sect_off,
+ bfd_get_filename (abfd));
+ }
gdb_assert (dwo_unit->offset.sect_off == cu->header.offset.sect_off);
/* For DWOs coming from DWP files, we don't know the CU length
nor the type's offset in the TU until now. */
dump_die (comp_unit_die, dwarf2_die_debug);
}
+ /* Save the comp_dir attribute. If there is no DWP file then we'll read
+ TUs by skipping the stub and going directly to the entry in the DWO file.
+ However, skipping the stub means we won't get DW_AT_comp_dir, so we have
+ to get it via circuitous means. Blech. */
+ if (comp_dir != NULL)
+ result_reader->comp_dir = DW_STRING (comp_dir);
+
/* Skip dummy compilation units. */
if (info_ptr >= begin_info_ptr + dwo_unit->length
|| peek_abbrev_code (abfd, info_ptr) == 0)
/* Subroutine of init_cutu_and_read_dies to simplify it.
Look up the DWO unit specified by COMP_UNIT_DIE of THIS_CU.
- If the specified DWO unit cannot be found an error is thrown. */
+ Returns NULL if the specified DWO unit cannot be found. */
static struct dwo_unit *
lookup_dwo_unit (struct dwarf2_per_cu_data *this_cu,
struct dwo_unit *dwo_unit;
const char *comp_dir, *dwo_name;
+ gdb_assert (cu != NULL);
+
/* Yeah, we look dwo_name up again, but it simplifies the code. */
attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_name, cu);
gdb_assert (attr != NULL);
signature);
}
- if (dwo_unit == NULL)
+ return dwo_unit;
+}
+
+/* Subroutine of init_cutu_and_read_dies to simplify it.
+ Read a TU directly from a DWO file, bypassing the stub. */
+
+static void
+init_tu_and_read_dwo_dies (struct dwarf2_per_cu_data *this_cu, int keep,
+ die_reader_func_ftype *die_reader_func,
+ void *data)
+{
+ struct dwarf2_cu *cu;
+ struct signatured_type *sig_type;
+ struct cleanup *cleanups, *free_cu_cleanup;
+ struct die_reader_specs reader;
+ const gdb_byte *info_ptr;
+ struct die_info *comp_unit_die;
+ int has_children;
+
+ /* Verify we can do the following downcast, and that we have the
+ data we need. */
+ gdb_assert (this_cu->is_debug_types && this_cu->reading_dwo_directly);
+ sig_type = (struct signatured_type *) this_cu;
+ gdb_assert (sig_type->dwo_unit != NULL);
+
+ cleanups = make_cleanup (null_cleanup, NULL);
+
+ gdb_assert (this_cu->cu == NULL);
+ cu = xmalloc (sizeof (*cu));
+ init_one_comp_unit (cu, this_cu);
+ /* If an error occurs while loading, release our storage. */
+ free_cu_cleanup = make_cleanup (free_heap_comp_unit, cu);
+
+ if (read_cutu_die_from_dwo (this_cu, sig_type->dwo_unit,
+ 0 /* abbrev_table_provided */,
+ NULL /* stub_comp_unit_die */,
+ sig_type->dwo_unit->dwo_file->comp_dir,
+ &reader, &info_ptr,
+ &comp_unit_die, &has_children) == 0)
+ {
+ /* Dummy die. */
+ do_cleanups (cleanups);
+ return;
+ }
+
+ /* All the "real" work is done here. */
+ die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data);
+
+ /* This duplicates some code in init_cutu_and_read_dies,
+ but the alternative is making the latter more complex.
+ This function is only for the special case of using DWO files directly:
+ no point in overly complicating the general case just to handle this. */
+ if (keep)
{
- error (_("Dwarf Error: CU at offset 0x%x references unknown DWO"
- " with ID %s [in module %s]"),
- this_cu->offset.sect_off, hex_string (signature),
- this_cu->objfile->name);
+ /* We've successfully allocated this compilation unit. Let our
+ caller clean it up when finished with it. */
+ discard_cleanups (free_cu_cleanup);
+
+ /* We can only discard free_cu_cleanup and all subsequent cleanups.
+ So we have to manually free the abbrev table. */
+ dwarf2_free_abbrev_table (cu);
+
+ /* Link this CU into read_in_chain. */
+ this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain;
+ dwarf2_per_objfile->read_in_chain = this_cu;
}
+ else
+ do_cleanups (free_cu_cleanup);
- return dwo_unit;
+ do_cleanups (cleanups);
}
/* Initialize a CU (or TU) and read its DIEs.
struct dwarf2_section_info *abbrev_section;
/* Non-zero if CU currently points to a DWO file and we need to
reread it. When this happens we need to reread the skeleton die
- before we can reread the DWO file. */
+ before we can reread the DWO file (this only applies to CUs, not TUs). */
int rereading_dwo_cu = 0;
if (dwarf2_die_debug)
if (use_existing_cu)
gdb_assert (keep);
+ /* If we're reading a TU directly from a DWO file, including a virtual DWO
+ file (instead of going through the stub), short-circuit all of this. */
+ if (this_cu->reading_dwo_directly)
+ {
+ /* Narrow down the scope of possibilities to have to understand. */
+ gdb_assert (this_cu->is_debug_types);
+ gdb_assert (abbrev_table == NULL);
+ gdb_assert (!use_existing_cu);
+ init_tu_and_read_dwo_dies (this_cu, keep, die_reader_func, data);
+ return;
+ }
+
cleanups = make_cleanup (null_cleanup, NULL);
/* This is cheap if the section is already read in. */
struct die_info *dwo_comp_unit_die;
if (has_children)
- error (_("Dwarf Error: compilation unit with DW_AT_GNU_dwo_name"
- " has children (offset 0x%x) [in module %s]"),
- this_cu->offset.sect_off, bfd_get_filename (abfd));
+ {
+ complaint (&symfile_complaints,
+ _("compilation unit with DW_AT_GNU_dwo_name"
+ " has children (offset 0x%x) [in module %s]"),
+ this_cu->offset.sect_off, bfd_get_filename (abfd));
+ }
dwo_unit = lookup_dwo_unit (this_cu, comp_unit_die);
- if (read_cutu_die_from_dwo (this_cu, dwo_unit,
- abbrev_table != NULL,
- comp_unit_die,
- &reader, &info_ptr,
- &dwo_comp_unit_die, &has_children) == 0)
+ if (dwo_unit != NULL)
{
- /* Dummy die. */
- do_cleanups (cleanups);
- return;
+ if (read_cutu_die_from_dwo (this_cu, dwo_unit,
+ abbrev_table != NULL,
+ comp_unit_die, NULL,
+ &reader, &info_ptr,
+ &dwo_comp_unit_die, &has_children) == 0)
+ {
+ /* Dummy die. */
+ do_cleanups (cleanups);
+ return;
+ }
+ comp_unit_die = dwo_comp_unit_die;
+ }
+ else
+ {
+ /* Yikes, we couldn't find the rest of the DIE, we only have
+ the stub. A complaint has already been logged. There's
+ not much more we can do except pass on the stub DIE to
+ die_reader_func. We don't want to throw an error on bad
+ debug info. */
}
- comp_unit_die = dwo_comp_unit_die;
}
/* All of the above is setup for this call. Yikes. */
STMT_LIST is a DW_AT_stmt_list attribute. */
static struct type_unit_group *
-get_type_unit_group (struct dwarf2_cu *cu, struct attribute *stmt_list)
+get_type_unit_group (struct dwarf2_cu *cu, const struct attribute *stmt_list)
{
struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats;
struct type_unit_group *tu_group;
func, data);
}
+ /* type_unit_groups can be NULL if there is an error in the debug info.
+ Just create an empty table so the rest of gdb doesn't have to watch
+ for this error case. */
+ if (dwarf2_per_objfile->type_unit_groups == NULL)
+ {
+ dwarf2_per_objfile->type_unit_groups =
+ allocate_type_unit_groups_table ();
+ dwarf2_per_objfile->n_type_unit_groups = 0;
+ }
+
/* Create a vector of pointers to primary type units to make it easy to
iterate over them and CUs. See dw2_get_primary_cu. */
dwarf2_per_objfile->n_type_unit_groups =
int n_allocated;
int n_comp_units;
struct dwarf2_per_cu_data **all_comp_units;
+ struct dwz_file *dwz;
n_comp_units = 0;
n_allocated = 10;
read_comp_units_from_section (objfile, &dwarf2_per_objfile->info, 0,
&n_allocated, &n_comp_units, &all_comp_units);
- if (bfd_get_section_by_name (objfile->obfd, ".gnu_debugaltlink") != NULL)
- {
- struct dwz_file *dwz = dwarf2_get_dwz_file ();
-
- read_comp_units_from_section (objfile, &dwz->info, 1,
- &n_allocated, &n_comp_units,
- &all_comp_units);
- }
+ dwz = dwarf2_get_dwz_file ();
+ if (dwz != NULL)
+ read_comp_units_from_section (objfile, &dwz->info, 1,
+ &n_allocated, &n_comp_units,
+ &all_comp_units);
dwarf2_per_objfile->all_comp_units
= obstack_alloc (&objfile->objfile_obstack,
: (item->per_cu->v.psymtab && !item->per_cu->v.psymtab->readin))
{
struct dwarf2_per_cu_data *per_cu = item->per_cu;
+ char buf[100];
- if (dwarf2_read_debug)
+ if (per_cu->is_debug_types)
{
- fprintf_unfiltered (gdb_stdlog,
- "Expanding symtab of %s at offset 0x%x\n",
- per_cu->is_debug_types ? "TU" : "CU",
- per_cu->offset.sect_off);
+ struct signatured_type *sig_type =
+ (struct signatured_type *) per_cu;
+
+ sprintf (buf, "TU %s at offset 0x%x",
+ hex_string (sig_type->signature), per_cu->offset.sect_off);
}
+ else
+ sprintf (buf, "CU at offset 0x%x", per_cu->offset.sect_off);
+
+ if (dwarf2_read_debug)
+ fprintf_unfiltered (gdb_stdlog, "Expanding symtab of %s\n", buf);
if (per_cu->is_debug_types)
process_full_type_unit (per_cu, item->pretend_language);
process_full_comp_unit (per_cu, item->pretend_language);
if (dwarf2_read_debug)
- {
- fprintf_unfiltered (gdb_stdlog,
- "Done expanding %s at offset 0x%x\n",
- per_cu->is_debug_types ? "TU" : "CU",
- per_cu->offset.sect_off);
- }
+ fprintf_unfiltered (gdb_stdlog, "Done expanding %s\n", buf);
}
item->per_cu->queued = 0;
included by PER_CU. */
static void
-recursively_compute_inclusions (VEC (dwarf2_per_cu_ptr) **result,
- htab_t all_children,
- struct dwarf2_per_cu_data *per_cu)
+recursively_compute_inclusions (VEC (symtab_ptr) **result,
+ htab_t all_children, htab_t all_type_symtabs,
+ struct dwarf2_per_cu_data *per_cu,
+ struct symtab *immediate_parent)
{
void **slot;
int ix;
+ struct symtab *symtab;
struct dwarf2_per_cu_data *iter;
slot = htab_find_slot (all_children, per_cu, INSERT);
*slot = per_cu;
/* Only add a CU if it has a symbol table. */
- if (get_symtab (per_cu) != NULL)
- VEC_safe_push (dwarf2_per_cu_ptr, *result, per_cu);
+ symtab = get_symtab (per_cu);
+ if (symtab != NULL)
+ {
+ /* If this is a type unit only add its symbol table if we haven't
+ seen it yet (type unit per_cu's can share symtabs). */
+ if (per_cu->is_debug_types)
+ {
+ slot = htab_find_slot (all_type_symtabs, symtab, INSERT);
+ if (*slot == NULL)
+ {
+ *slot = symtab;
+ VEC_safe_push (symtab_ptr, *result, symtab);
+ if (symtab->user == NULL)
+ symtab->user = immediate_parent;
+ }
+ }
+ else
+ {
+ VEC_safe_push (symtab_ptr, *result, symtab);
+ if (symtab->user == NULL)
+ symtab->user = immediate_parent;
+ }
+ }
for (ix = 0;
VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, ix, iter);
++ix)
- recursively_compute_inclusions (result, all_children, iter);
+ {
+ recursively_compute_inclusions (result, all_children,
+ all_type_symtabs, iter, symtab);
+ }
}
/* Compute the symtab 'includes' fields for the symtab related to
if (!VEC_empty (dwarf2_per_cu_ptr, per_cu->imported_symtabs))
{
int ix, len;
- struct dwarf2_per_cu_data *iter;
- VEC (dwarf2_per_cu_ptr) *result_children = NULL;
- htab_t all_children;
+ struct dwarf2_per_cu_data *per_cu_iter;
+ struct symtab *symtab_iter;
+ VEC (symtab_ptr) *result_symtabs = NULL;
+ htab_t all_children, all_type_symtabs;
struct symtab *symtab = get_symtab (per_cu);
/* If we don't have a symtab, we can just skip this case. */
all_children = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer,
NULL, xcalloc, xfree);
+ all_type_symtabs = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer,
+ NULL, xcalloc, xfree);
for (ix = 0;
VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs,
- ix, iter);
+ ix, per_cu_iter);
++ix)
- recursively_compute_inclusions (&result_children, all_children, iter);
+ {
+ recursively_compute_inclusions (&result_symtabs, all_children,
+ all_type_symtabs, per_cu_iter,
+ symtab);
+ }
- /* Now we have a transitive closure of all the included CUs, and
- for .gdb_index version 7 the included TUs, so we can convert it
- to a list of symtabs. */
- len = VEC_length (dwarf2_per_cu_ptr, result_children);
+ /* Now we have a transitive closure of all the included symtabs. */
+ len = VEC_length (symtab_ptr, result_symtabs);
symtab->includes
= obstack_alloc (&dwarf2_per_objfile->objfile->objfile_obstack,
(len + 1) * sizeof (struct symtab *));
for (ix = 0;
- VEC_iterate (dwarf2_per_cu_ptr, result_children, ix, iter);
+ VEC_iterate (symtab_ptr, result_symtabs, ix, symtab_iter);
++ix)
- symtab->includes[ix] = get_symtab (iter);
+ symtab->includes[ix] = symtab_iter;
symtab->includes[len] = NULL;
- VEC_free (dwarf2_per_cu_ptr, result_children);
+ VEC_free (symtab_ptr, result_symtabs);
htab_delete (all_children);
+ htab_delete (all_type_symtabs);
}
}
static void
handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu,
- const char *comp_dir)
+ const char *comp_dir) /* ARI: editCase function */
{
struct attribute *attr;
hash_dwo_file (const void *item)
{
const struct dwo_file *dwo_file = item;
+ hashval_t hash;
- return (htab_hash_string (dwo_file->dwo_name)
- + htab_hash_string (dwo_file->comp_dir));
+ hash = htab_hash_string (dwo_file->dwo_name);
+ if (dwo_file->comp_dir != NULL)
+ hash += htab_hash_string (dwo_file->comp_dir);
+ return hash;
}
static int
const struct dwo_file *lhs = item_lhs;
const struct dwo_file *rhs = item_rhs;
- return (strcmp (lhs->dwo_name, rhs->dwo_name) == 0
- && strcmp (lhs->comp_dir, rhs->comp_dir) == 0);
+ if (strcmp (lhs->dwo_name, rhs->dwo_name) != 0)
+ return 0;
+ if (lhs->comp_dir == NULL || rhs->comp_dir == NULL)
+ return lhs->comp_dir == rhs->comp_dir;
+ return strcmp (lhs->comp_dir, rhs->comp_dir) == 0;
}
/* Allocate a hash table for DWO files. */
/* DWP file .debug_{cu,tu}_index section format:
[ref: http://gcc.gnu.org/wiki/DebugFissionDWP]
+ DWP Version 1:
+
Both index sections have the same format, and serve to map a 64-bit
signature to a set of section numbers. Each section begins with a header,
followed by a hash table of 64-bit signatures, a parallel table of 32-bit
indexes, and a pool of 32-bit section numbers. The index sections will be
aligned at 8-byte boundaries in the file.
- The index section header contains two unsigned 32-bit values (using the
- byte order of the application binary):
+ The index section header consists of:
+
+ V, 32 bit version number
+ -, 32 bits unused
+ N, 32 bit number of compilation units or type units in the index
+ M, 32 bit number of slots in the hash table
- N, the number of compilation units or type units in the index
- M, the number of slots in the hash table
+ Numbers are recorded using the byte order of the application binary.
- (We assume that N and M will not exceed 2^32 - 1.)
+ We assume that N and M will not exceed 2^32 - 1.
- The size of the hash table, M, must be 2^k such that 2^k > 3*N/2.
+ The size of the hash table, M, must be 2^k such that 2^k > 3*N/2.
- The hash table begins at offset 8 in the section, and consists of an array
- of M 64-bit slots. Each slot contains a 64-bit signature (using the byte
- order of the application binary). Unused slots in the hash table are 0.
- (We rely on the extreme unlikeliness of a signature being exactly 0.)
+ The hash table begins at offset 16 in the section, and consists of an array
+ of M 64-bit slots. Each slot contains a 64-bit signature (using the byte
+ order of the application binary). Unused slots in the hash table are 0.
+ (We rely on the extreme unlikeliness of a signature being exactly 0.)
- The parallel table begins immediately after the hash table
- (at offset 8 + 8 * M from the beginning of the section), and consists of an
- array of 32-bit indexes (using the byte order of the application binary),
- corresponding 1-1 with slots in the hash table. Each entry in the parallel
- table contains a 32-bit index into the pool of section numbers. For unused
- hash table slots, the corresponding entry in the parallel table will be 0.
+ The parallel table begins immediately after the hash table
+ (at offset 16 + 8 * M from the beginning of the section), and consists of an
+ array of 32-bit indexes (using the byte order of the application binary),
+ corresponding 1-1 with slots in the hash table. Each entry in the parallel
+ table contains a 32-bit index into the pool of section numbers. For unused
+ hash table slots, the corresponding entry in the parallel table will be 0.
- Given a 64-bit compilation unit signature or a type signature S, an entry
- in the hash table is located as follows:
+ Given a 64-bit compilation unit signature or a type signature S, an entry
+ in the hash table is located as follows:
- 1) Calculate a primary hash H = S & MASK(k), where MASK(k) is a mask with
- the low-order k bits all set to 1.
+ 1) Calculate a primary hash H = S & MASK(k), where MASK(k) is a mask with
+ the low-order k bits all set to 1.
- 2) Calculate a secondary hash H' = (((S >> 32) & MASK(k)) | 1).
+ 2) Calculate a secondary hash H' = (((S >> 32) & MASK(k)) | 1).
- 3) If the hash table entry at index H matches the signature, use that
- entry. If the hash table entry at index H is unused (all zeroes),
- terminate the search: the signature is not present in the table.
+ 3) If the hash table entry at index H matches the signature, use that
+ entry. If the hash table entry at index H is unused (all zeroes),
+ terminate the search: the signature is not present in the table.
- 4) Let H = (H + H') modulo M. Repeat at Step 3.
+ 4) Let H = (H + H') modulo M. Repeat at Step 3.
- Because M > N and H' and M are relatively prime, the search is guaranteed
- to stop at an unused slot or find the match.
+ Because M > N and H' and M are relatively prime, the search is guaranteed
+ to stop at an unused slot or find the match.
- The pool of section numbers begins immediately following the hash table
- (at offset 8 + 12 * M from the beginning of the section). The pool of
- section numbers consists of an array of 32-bit words (using the byte order
- of the application binary). Each item in the array is indexed starting
- from 0. The hash table entry provides the index of the first section
- number in the set. Additional section numbers in the set follow, and the
- set is terminated by a 0 entry (section number 0 is not used in ELF).
+ The pool of section numbers begins immediately following the hash table
+ (at offset 16 + 12 * M from the beginning of the section). The pool of
+ section numbers consists of an array of 32-bit words (using the byte order
+ of the application binary). Each item in the array is indexed starting
+ from 0. The hash table entry provides the index of the first section
+ number in the set. Additional section numbers in the set follow, and the
+ set is terminated by a 0 entry (section number 0 is not used in ELF).
- In each set of section numbers, the .debug_info.dwo or .debug_types.dwo
- section must be the first entry in the set, and the .debug_abbrev.dwo must
- be the second entry. Other members of the set may follow in any order. */
+ In each set of section numbers, the .debug_info.dwo or .debug_types.dwo
+ section must be the first entry in the set, and the .debug_abbrev.dwo must
+ be the second entry. Other members of the set may follow in any order. */
/* Create a hash table to map DWO IDs to their CU/TU entry in
.debug_{info,types}.dwo in DWP_FILE.
if (version != 1)
{
- error (_("Dwarf Error: unsupported DWP file version (%u)"
+ error (_("Dwarf Error: unsupported DWP file version (%s)"
" [in module %s]"),
- version, dwp_file->name);
+ pulongest (version), dwp_file->name);
}
if (nr_slots != (nr_slots & -nr_slots))
{
- error (_("Dwarf Error: number of slots in DWP hash table (%u)"
+ error (_("Dwarf Error: number of slots in DWP hash table (%s)"
" is not power of 2 [in module %s]"),
- nr_slots, dwp_file->name);
+ pulongest (nr_slots), dwp_file->name);
}
htab = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwp_hash_table);
if (dwarf2_read_debug)
{
- fprintf_unfiltered (gdb_stdlog, "Reading %s %u/%s in DWP file: %s\n",
+ fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP file: %s\n",
kind,
- section_index, hex_string (signature),
+ pulongest (section_index), hex_string (signature),
dwp_file->name);
}
preliminary analysis. Return a newly initialized bfd *, which
includes a canonicalized copy of FILE_NAME.
If IS_DWP is TRUE, we're opening a DWP file, otherwise a DWO file.
- In case of trouble, return NULL.
+ SEARCH_CWD is true if the current directory is to be searched.
+ It will be searched before debug-file-directory.
+ If unable to find/open the file, return NULL.
NOTE: This function is derived from symfile_bfd_open. */
static bfd *
-try_open_dwop_file (const char *file_name, int is_dwp)
+try_open_dwop_file (const char *file_name, int is_dwp, int search_cwd)
{
bfd *sym_bfd;
int desc, flags;
char *absolute_name;
+ /* Blech. OPF_TRY_CWD_FIRST also disables searching the path list if
+ FILE_NAME contains a '/'. So we can't use it. Instead prepend "."
+ to debug_file_directory. */
+ char *search_path;
+ static const char dirname_separator_string[] = { DIRNAME_SEPARATOR, '\0' };
- flags = OPF_TRY_CWD_FIRST;
+ if (search_cwd)
+ {
+ if (*debug_file_directory != '\0')
+ search_path = concat (".", dirname_separator_string,
+ debug_file_directory, NULL);
+ else
+ search_path = xstrdup (".");
+ }
+ else
+ search_path = xstrdup (debug_file_directory);
+
+ flags = 0;
if (is_dwp)
flags |= OPF_SEARCH_IN_PATH;
- desc = openp (debug_file_directory, flags, file_name,
+ desc = openp (search_path, flags, file_name,
O_RDONLY | O_BINARY, &absolute_name);
+ xfree (search_path);
if (desc < 0)
return NULL;
sym_bfd = gdb_bfd_open (absolute_name, gnutarget, desc);
- if (!sym_bfd)
- {
- xfree (absolute_name);
- return NULL;
- }
xfree (absolute_name);
+ if (sym_bfd == NULL)
+ return NULL;
bfd_set_cacheable (sym_bfd, 1);
if (!bfd_check_format (sym_bfd, bfd_object))
bfd *abfd;
if (IS_ABSOLUTE_PATH (file_name))
- return try_open_dwop_file (file_name, 0 /*is_dwp*/);
+ return try_open_dwop_file (file_name, 0 /*is_dwp*/, 0 /*search_cwd*/);
/* Before trying the search path, try DWO_NAME in COMP_DIR. */
/* NOTE: If comp_dir is a relative path, this will also try the
search path, which seems useful. */
- abfd = try_open_dwop_file (path_to_try, 0 /*is_dwp*/);
+ abfd = try_open_dwop_file (path_to_try, 0 /*is_dwp*/, 1 /*search_cwd*/);
xfree (path_to_try);
if (abfd != NULL)
return abfd;
if (*debug_file_directory == '\0')
return NULL;
- return try_open_dwop_file (file_name, 0 /*is_dwp*/);
+ return try_open_dwop_file (file_name, 0 /*is_dwp*/, 1 /*search_cwd*/);
}
/* This function is mapped across the sections and remembers the offset and
static bfd *
open_dwp_file (const char *file_name)
{
- return try_open_dwop_file (file_name, 1 /*is_dwp*/);
+ bfd *abfd;
+
+ abfd = try_open_dwop_file (file_name, 1 /*is_dwp*/, 1 /*search_cwd*/);
+ if (abfd != NULL)
+ return abfd;
+
+ /* Work around upstream bug 15652.
+ http://sourceware.org/bugzilla/show_bug.cgi?id=15652
+ [Whether that's a "bug" is debatable, but it is getting in our way.]
+ We have no real idea where the dwp file is, because gdb's realpath-ing
+ of the executable's path may have discarded the needed info.
+ [IWBN if the dwp file name was recorded in the executable, akin to
+ .gnu_debuglink, but that doesn't exist yet.]
+ Strip the directory from FILE_NAME and search again. */
+ if (*debug_file_directory != '\0')
+ {
+ /* Don't implicitly search the current directory here.
+ If the user wants to search "." to handle this case,
+ it must be added to debug-file-directory. */
+ return try_open_dwop_file (lbasename (file_name), 1 /*is_dwp*/,
+ 0 /*search_cwd*/);
+ }
+
+ return NULL;
}
/* Initialize the use of the DWP file for the current objfile.
return NULL;
}
dwp_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwp_file);
- dwp_file->name = obstack_copy0 (&objfile->objfile_obstack,
- dwp_name, strlen (dwp_name));
+ dwp_file->name = bfd_get_filename (dbfd);
dwp_file->dbfd = dbfd;
do_cleanups (cleanups);
{
fprintf_unfiltered (gdb_stdlog, "DWP file found: %s\n", dwp_file->name);
fprintf_unfiltered (gdb_stdlog,
- " %u CUs, %u TUs\n",
- dwp_file->cus ? dwp_file->cus->nr_units : 0,
- dwp_file->tus ? dwp_file->tus->nr_units : 0);
+ " %s CUs, %s TUs\n",
+ pulongest (dwp_file->cus ? dwp_file->cus->nr_units : 0),
+ pulongest (dwp_file->tus ? dwp_file->tus->nr_units : 0));
}
return dwp_file;
struct dwo_file *dwo_file;
struct dwp_file *dwp_file;
- /* Have we already read SIGNATURE from a DWP file? */
+ /* First see if there's a DWP file.
+ If we have a DWP file but didn't find the DWO inside it, don't
+ look for the original DWO file. It makes gdb behave differently
+ depending on whether one is debugging in the build tree. */
dwp_file = get_dwp_file ();
if (dwp_file != NULL)
}
}
}
-
- /* Have we already seen DWO_NAME? */
-
- dwo_file_slot = lookup_dwo_file_slot (dwo_name, comp_dir);
- if (*dwo_file_slot == NULL)
- {
- /* Read in the file and build a table of the DWOs it contains. */
- *dwo_file_slot = open_and_init_dwo_file (this_unit, dwo_name, comp_dir);
- }
- /* NOTE: This will be NULL if unable to open the file. */
- dwo_file = *dwo_file_slot;
-
- if (dwo_file != NULL)
+ else
{
- struct dwo_unit *dwo_cutu = NULL;
-
- if (is_debug_types && dwo_file->tus)
- {
- struct dwo_unit find_dwo_cutu;
+ /* No DWP file, look for the DWO file. */
- memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu));
- find_dwo_cutu.signature = signature;
- dwo_cutu = htab_find (dwo_file->tus, &find_dwo_cutu);
- }
- else if (!is_debug_types && dwo_file->cu)
+ dwo_file_slot = lookup_dwo_file_slot (dwo_name, comp_dir);
+ if (*dwo_file_slot == NULL)
{
- if (signature == dwo_file->cu->signature)
- dwo_cutu = dwo_file->cu;
+ /* Read in the file and build a table of the CUs/TUs it contains. */
+ *dwo_file_slot = open_and_init_dwo_file (this_unit, dwo_name, comp_dir);
}
+ /* NOTE: This will be NULL if unable to open the file. */
+ dwo_file = *dwo_file_slot;
- if (dwo_cutu != NULL)
+ if (dwo_file != NULL)
{
- if (dwarf2_read_debug)
+ struct dwo_unit *dwo_cutu = NULL;
+
+ if (is_debug_types && dwo_file->tus)
+ {
+ struct dwo_unit find_dwo_cutu;
+
+ memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu));
+ find_dwo_cutu.signature = signature;
+ dwo_cutu = htab_find (dwo_file->tus, &find_dwo_cutu);
+ }
+ else if (!is_debug_types && dwo_file->cu)
+ {
+ if (signature == dwo_file->cu->signature)
+ dwo_cutu = dwo_file->cu;
+ }
+
+ if (dwo_cutu != NULL)
{
- fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) found: @%s\n",
- kind, dwo_name, hex_string (signature),
- host_address_to_string (dwo_cutu));
+ if (dwarf2_read_debug)
+ {
+ fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) found: @%s\n",
+ kind, dwo_name, hex_string (signature),
+ host_address_to_string (dwo_cutu));
+ }
+ return dwo_cutu;
}
- return dwo_cutu;
}
}
kind, dwo_name, hex_string (signature));
}
- complaint (&symfile_complaints,
- _("Could not find DWO %s referenced by CU at offset 0x%x"
- " [in module %s]"),
- kind, this_unit->offset.sect_off, objfile->name);
+ /* This is a warning and not a complaint because it can be caused by
+ pilot error (e.g., user accidentally deleting the DWO). */
+ warning (_("Could not find DWO %s %s(%s) referenced by %s at offset 0x%x"
+ " [in module %s]"),
+ kind, dwo_name, hex_string (signature),
+ this_unit->is_debug_types ? "TU" : "CU",
+ this_unit->offset.sect_off, objfile->name);
return NULL;
}
SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton);
}
- else if (is_ref_attr (attr))
+ else if (attr_form_is_ref (attr))
{
struct dwarf2_cu *target_cu = cu;
struct die_info *target_die;
loc = dwarf2_attr (child_die, DW_AT_location, cu);
origin = dwarf2_attr (child_die, DW_AT_abstract_origin, cu);
- if (loc == NULL && origin != NULL && is_ref_attr (origin))
+ if (loc == NULL && origin != NULL && attr_form_is_ref (origin))
{
sect_offset offset;
address range list in the .debug_ranges section. */
unsigned long offset = (DW_UNSND (attr)
+ (need_ranges_base ? cu->ranges_base : 0));
- const gdb_byte *buffer = dwarf2_per_objfile->ranges.buffer + offset;
+ const gdb_byte *buffer;
/* For some target architectures, but not others, the
read_address function sign-extends the addresses it returns.
CORE_ADDR base = cu->base_address;
int base_known = cu->base_known;
- gdb_assert (dwarf2_per_objfile->ranges.readin);
+ dwarf2_read_section (objfile, &dwarf2_per_objfile->ranges);
if (offset >= dwarf2_per_objfile->ranges.size)
{
complaint (&symfile_complaints,
offset);
return;
}
+ buffer = dwarf2_per_objfile->ranges.buffer + offset;
for (;;)
{
return set_die_type (die, type, cu);
}
+/* Assuming that DIE corresponds to a function, returns nonzero
+ if the function is prototyped. */
+
+static int
+prototyped_function_p (struct die_info *die, struct dwarf2_cu *cu)
+{
+ struct attribute *attr;
+
+ attr = dwarf2_attr (die, DW_AT_prototyped, cu);
+ if (attr && (DW_UNSND (attr) != 0))
+ return 1;
+
+ /* The DWARF standard implies that the DW_AT_prototyped attribute
+ is only meaninful for C, but the concept also extends to other
+ languages that allow unprototyped functions (Eg: Objective C).
+ For all other languages, assume that functions are always
+ prototyped. */
+ if (cu->language != language_c
+ && cu->language != language_objc
+ && cu->language != language_opencl)
+ return 1;
+
+ /* RealView does not emit DW_AT_prototyped. We can not distinguish
+ prototyped and unprototyped functions; default to prototyped,
+ since that is more common in modern code (and RealView warns
+ about unprototyped functions). */
+ if (producer_is_realview (cu->producer))
+ return 1;
+
+ return 0;
+}
+
/* Handle DIES due to C code like:
struct foo
ftype = lookup_function_type (type);
- /* All functions in C++, Pascal and Java have prototypes. */
- attr = dwarf2_attr (die, DW_AT_prototyped, cu);
- if ((attr && (DW_UNSND (attr) != 0))
- || cu->language == language_cplus
- || cu->language == language_java
- || cu->language == language_pascal)
- TYPE_PROTOTYPED (ftype) = 1;
- else if (producer_is_realview (cu->producer))
- /* RealView does not emit DW_AT_prototyped. We can not
- distinguish prototyped and unprototyped functions; default to
- prototyped, since that is more common in modern code (and
- RealView warns about unprototyped functions). */
+ if (prototyped_function_p (die, cu))
TYPE_PROTOTYPED (ftype) = 1;
/* Store the calling convention in the type if it's available in
attr = dwarf2_attr (die, DW_AT_upper_bound, cu);
if (attr)
{
- if (attr_form_is_block (attr) || is_ref_attr (attr))
+ if (attr_form_is_block (attr) || attr_form_is_ref (attr))
{
/* GCC encodes arrays with unspecified or dynamic length
with a DW_FORM_block1 attribute or a reference attribute.
{
struct dwarf2_cu *cu = ptr_to_cu;
- abbrev_table_free (cu->abbrev_table);
+ if (cu->abbrev_table != NULL)
+ abbrev_table_free (cu->abbrev_table);
/* Set this to NULL so that we SEGV if we try to read it later,
and also because free_comp_unit verifies this is NULL. */
cu->abbrev_table = NULL;
}
/* Super hack. */
- if (cu->per_cu->is_dwz && is_ref_attr (attr))
+ if (cu->per_cu->is_dwz && attr_form_is_ref (attr))
attr->form = DW_FORM_GNU_ref_alt;
/* We have seen instances where the compiler tried to emit a byte
case DW_LANG_C89:
case DW_LANG_C99:
case DW_LANG_C:
+ case DW_LANG_UPC:
cu->language = language_c;
break;
case DW_LANG_C_plus_plus:
if (line_ptr + lh->total_length > (section->buffer + section->size))
{
dwarf2_statement_list_fits_in_line_number_section_complaint ();
+ do_cleanups (back_to);
return 0;
}
lh->statement_program_end = line_ptr + lh->total_length;
because that is the interpretation long in use by GCC. */
static gdb_byte *
-dwarf2_const_value_data (struct attribute *attr, struct type *type,
- const char *name, struct obstack *obstack,
+dwarf2_const_value_data (const struct attribute *attr, struct obstack *obstack,
struct dwarf2_cu *cu, LONGEST *value, int bits)
{
struct objfile *objfile = cu->objfile;
expression. */
static void
-dwarf2_const_value_attr (struct attribute *attr, struct type *type,
+dwarf2_const_value_attr (const struct attribute *attr, struct type *type,
const char *name, struct obstack *obstack,
struct dwarf2_cu *cu,
LONGEST *value, const gdb_byte **bytes,
/* Symbols of this form are reasonably rare, so we just
piggyback on the existing location code rather than writing
a new implementation of symbol_computed_ops. */
- *baton = obstack_alloc (&objfile->objfile_obstack,
- sizeof (struct dwarf2_locexpr_baton));
+ *baton = obstack_alloc (obstack, sizeof (struct dwarf2_locexpr_baton));
(*baton)->per_cu = cu->per_cu;
gdb_assert ((*baton)->per_cu);
(*baton)->size = 2 + cu_header->addr_size;
- data = obstack_alloc (&objfile->objfile_obstack, (*baton)->size);
+ data = obstack_alloc (obstack, (*baton)->size);
(*baton)->data = data;
data[0] = DW_OP_addr;
converted to host endianness, so we just need to sign- or
zero-extend it as appropriate. */
case DW_FORM_data1:
- *bytes = dwarf2_const_value_data (attr, type, name,
- obstack, cu, value, 8);
+ *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 8);
break;
case DW_FORM_data2:
- *bytes = dwarf2_const_value_data (attr, type, name,
- obstack, cu, value, 16);
+ *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 16);
break;
case DW_FORM_data4:
- *bytes = dwarf2_const_value_data (attr, type, name,
- obstack, cu, value, 32);
+ *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 32);
break;
case DW_FORM_data8:
- *bytes = dwarf2_const_value_data (attr, type, name,
- obstack, cu, value, 64);
+ *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 64);
break;
case DW_FORM_sdata:
/* Copy constant value from an attribute to a symbol. */
static void
-dwarf2_const_value (struct attribute *attr, struct symbol *sym,
+dwarf2_const_value (const struct attribute *attr, struct symbol *sym,
struct dwarf2_cu *cu)
{
struct objfile *objfile = cu->objfile;
If there is no type substitute an error marker. */
static struct type *
-lookup_die_type (struct die_info *die, struct attribute *attr,
+lookup_die_type (struct die_info *die, const struct attribute *attr,
struct dwarf2_cu *cu)
{
struct objfile *objfile = cu->objfile;
per_cu = dwarf2_find_containing_comp_unit (offset, 1, cu->objfile);
this_type = get_die_type_at_offset (offset, per_cu);
}
- else if (is_ref_attr (attr))
+ else if (attr_form_is_ref (attr))
{
sect_offset offset = dwarf2_get_ref_die_offset (attr);
struct die_info *type_die = NULL;
struct dwarf2_cu *type_cu = cu;
- if (is_ref_attr (attr))
+ if (attr_form_is_ref (attr))
type_die = follow_die_ref (die, attr, &type_cu);
if (type_die == NULL)
return build_error_marker_type (cu, die);
*slot = die;
}
-/* DW_ADDR is always stored already as sect_offset; despite for the forms
- besides DW_FORM_ref_addr it is stored as cu_offset in the DWARF file. */
-
-static int
-is_ref_attr (struct attribute *attr)
-{
- switch (attr->form)
- {
- case DW_FORM_ref_addr:
- case DW_FORM_ref1:
- case DW_FORM_ref2:
- case DW_FORM_ref4:
- case DW_FORM_ref8:
- case DW_FORM_ref_udata:
- case DW_FORM_GNU_ref_alt:
- return 1;
- default:
- return 0;
- }
-}
-
/* Return DIE offset of ATTR. Return 0 with complaint if ATTR is not of the
required kind. */
static sect_offset
-dwarf2_get_ref_die_offset (struct attribute *attr)
+dwarf2_get_ref_die_offset (const struct attribute *attr)
{
sect_offset retval = { DW_UNSND (attr) };
- if (is_ref_attr (attr))
+ if (attr_form_is_ref (attr))
return retval;
retval.sect_off = 0;
* the value held by the attribute is not constant. */
static LONGEST
-dwarf2_get_attr_constant_value (struct attribute *attr, int default_value)
+dwarf2_get_attr_constant_value (const struct attribute *attr, int default_value)
{
if (attr->form == DW_FORM_sdata)
return DW_SND (attr);
On exit *REF_CU is the CU of the result. */
static struct die_info *
-follow_die_ref_or_sig (struct die_info *src_die, struct attribute *attr,
+follow_die_ref_or_sig (struct die_info *src_die, const struct attribute *attr,
struct dwarf2_cu **ref_cu)
{
struct die_info *die;
- if (is_ref_attr (attr))
+ if (attr_form_is_ref (attr))
die = follow_die_ref (src_die, attr, ref_cu);
else if (attr->form == DW_FORM_ref_sig8)
die = follow_die_sig (src_die, attr, ref_cu);
On exit *REF_CU is the CU of the result. */
static struct die_info *
-follow_die_ref (struct die_info *src_die, struct attribute *attr,
+follow_die_ref (struct die_info *src_die, const struct attribute *attr,
struct dwarf2_cu **ref_cu)
{
sect_offset offset = dwarf2_get_ref_die_offset (attr);
return dwarf2_fetch_die_loc_sect_off (offset, per_cu, get_frame_pc, baton);
}
+/* Write a constant of a given type as target-ordered bytes into
+ OBSTACK. */
+
+static const gdb_byte *
+write_constant_as_bytes (struct obstack *obstack,
+ enum bfd_endian byte_order,
+ struct type *type,
+ ULONGEST value,
+ LONGEST *len)
+{
+ gdb_byte *result;
+
+ *len = TYPE_LENGTH (type);
+ result = obstack_alloc (obstack, *len);
+ store_unsigned_integer (result, *len, byte_order, value);
+
+ return result;
+}
+
+/* If the DIE at OFFSET in PER_CU has a DW_AT_const_value, return a
+ pointer to the constant bytes and set LEN to the length of the
+ data. If memory is needed, allocate it on OBSTACK. If the DIE
+ does not have a DW_AT_const_value, return NULL. */
+
+const gdb_byte *
+dwarf2_fetch_constant_bytes (sect_offset offset,
+ struct dwarf2_per_cu_data *per_cu,
+ struct obstack *obstack,
+ LONGEST *len)
+{
+ struct dwarf2_cu *cu;
+ struct die_info *die;
+ struct attribute *attr;
+ const gdb_byte *result = NULL;
+ struct type *type;
+ LONGEST value;
+ enum bfd_endian byte_order;
+
+ dw2_setup (per_cu->objfile);
+
+ if (per_cu->cu == NULL)
+ load_cu (per_cu);
+ cu = per_cu->cu;
+
+ die = follow_die_offset (offset, per_cu->is_dwz, &cu);
+ if (!die)
+ error (_("Dwarf Error: Cannot find DIE at 0x%x referenced in module %s"),
+ offset.sect_off, per_cu->objfile->name);
+
+
+ attr = dwarf2_attr (die, DW_AT_const_value, cu);
+ if (attr == NULL)
+ return NULL;
+
+ byte_order = (bfd_big_endian (per_cu->objfile->obfd)
+ ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE);
+
+ switch (attr->form)
+ {
+ case DW_FORM_addr:
+ case DW_FORM_GNU_addr_index:
+ {
+ gdb_byte *tem;
+
+ *len = cu->header.addr_size;
+ tem = obstack_alloc (obstack, *len);
+ store_unsigned_integer (tem, *len, byte_order, DW_ADDR (attr));
+ result = tem;
+ }
+ break;
+ case DW_FORM_string:
+ case DW_FORM_strp:
+ case DW_FORM_GNU_str_index:
+ case DW_FORM_GNU_strp_alt:
+ /* DW_STRING is already allocated on the objfile obstack, point
+ directly to it. */
+ result = (const gdb_byte *) DW_STRING (attr);
+ *len = strlen (DW_STRING (attr));
+ break;
+ case DW_FORM_block1:
+ case DW_FORM_block2:
+ case DW_FORM_block4:
+ case DW_FORM_block:
+ case DW_FORM_exprloc:
+ result = DW_BLOCK (attr)->data;
+ *len = DW_BLOCK (attr)->size;
+ break;
+
+ /* The DW_AT_const_value attributes are supposed to carry the
+ symbol's value "represented as it would be on the target
+ architecture." By the time we get here, it's already been
+ converted to host endianness, so we just need to sign- or
+ zero-extend it as appropriate. */
+ case DW_FORM_data1:
+ type = die_type (die, cu);
+ result = dwarf2_const_value_data (attr, obstack, cu, &value, 8);
+ if (result == NULL)
+ result = write_constant_as_bytes (obstack, byte_order,
+ type, value, len);
+ break;
+ case DW_FORM_data2:
+ type = die_type (die, cu);
+ result = dwarf2_const_value_data (attr, obstack, cu, &value, 16);
+ if (result == NULL)
+ result = write_constant_as_bytes (obstack, byte_order,
+ type, value, len);
+ break;
+ case DW_FORM_data4:
+ type = die_type (die, cu);
+ result = dwarf2_const_value_data (attr, obstack, cu, &value, 32);
+ if (result == NULL)
+ result = write_constant_as_bytes (obstack, byte_order,
+ type, value, len);
+ break;
+ case DW_FORM_data8:
+ type = die_type (die, cu);
+ result = dwarf2_const_value_data (attr, obstack, cu, &value, 64);
+ if (result == NULL)
+ result = write_constant_as_bytes (obstack, byte_order,
+ type, value, len);
+ break;
+
+ case DW_FORM_sdata:
+ type = die_type (die, cu);
+ result = write_constant_as_bytes (obstack, byte_order,
+ type, DW_SND (attr), len);
+ break;
+
+ case DW_FORM_udata:
+ type = die_type (die, cu);
+ result = write_constant_as_bytes (obstack, byte_order,
+ type, DW_UNSND (attr), len);
+ break;
+
+ default:
+ complaint (&symfile_complaints,
+ _("unsupported const value attribute form: '%s'"),
+ dwarf_form_name (attr->form));
+ break;
+ }
+
+ return result;
+}
+
/* Return the type of the DIE at DIE_OFFSET in the CU named by
PER_CU. */
If the referenced type cannot be found an error is thrown. */
static struct die_info *
-follow_die_sig (struct die_info *src_die, struct attribute *attr,
+follow_die_sig (struct die_info *src_die, const struct attribute *attr,
struct dwarf2_cu **ref_cu)
{
ULONGEST signature = DW_SIGNATURE (attr);
gdb_assert (attr->form == DW_FORM_ref_sig8);
- sig_type = lookup_signatured_type (signature);
+ sig_type = lookup_signatured_type (*ref_cu, signature);
/* sig_type will be NULL if the signatured type is missing from
the debug info. */
if (sig_type == NULL)
struct die_info *type_die;
struct type *type;
- sig_type = lookup_signatured_type (signature);
+ sig_type = lookup_signatured_type (cu, signature);
/* sig_type will be NULL if the signatured type is missing from
the debug info. */
if (sig_type == NULL)
reading in and processing the type unit if necessary. */
static struct type *
-get_DW_AT_signature_type (struct die_info *die, struct attribute *attr,
- struct dwarf2_cu *cu)
+get_DW_AT_signature_type (struct die_info *die, const struct attribute *attr,
+ struct dwarf2_cu *cu) /* ARI: editCase function */
{
/* Yes, DW_AT_signature can use a non-ref_sig8 reference. */
- if (is_ref_attr (attr))
+ if (attr_form_is_ref (attr))
{
struct dwarf2_cu *type_cu = cu;
struct die_info *type_die = follow_die_ref (die, attr, &type_cu);
init_cutu_and_read_dies (per_cu, NULL, 0, 1,
read_signatured_type_reader, NULL);
+ sig_type->per_cu.tu_read = 1;
}
/* Decode simple location descriptions.
if so return true else false. */
static int
-attr_form_is_block (struct attribute *attr)
+attr_form_is_block (const struct attribute *attr)
{
return (attr == NULL ? 0 :
attr->form == DW_FORM_block1
of them. */
static int
-attr_form_is_section_offset (struct attribute *attr)
+attr_form_is_section_offset (const struct attribute *attr)
{
return (attr->form == DW_FORM_data4
|| attr->form == DW_FORM_data8
taken as section offsets, not constants. */
static int
-attr_form_is_constant (struct attribute *attr)
+attr_form_is_constant (const struct attribute *attr)
{
switch (attr->form)
{
}
}
+
+/* DW_ADDR is always stored already as sect_offset; despite for the forms
+ besides DW_FORM_ref_addr it is stored as cu_offset in the DWARF file. */
+
+static int
+attr_form_is_ref (const struct attribute *attr)
+{
+ switch (attr->form)
+ {
+ case DW_FORM_ref_addr:
+ case DW_FORM_ref1:
+ case DW_FORM_ref2:
+ case DW_FORM_ref4:
+ case DW_FORM_ref8:
+ case DW_FORM_ref_udata:
+ case DW_FORM_GNU_ref_alt:
+ return 1;
+ default:
+ return 0;
+ }
+}
+
/* Return the .debug_loc section to use for CU.
For DWO files use .debug_loc.dwo. */
static void
fill_in_loclist_baton (struct dwarf2_cu *cu,
struct dwarf2_loclist_baton *baton,
- struct attribute *attr)
+ const struct attribute *attr)
{
struct dwarf2_section_info *section = cu_debug_loc_section (cu);
}
static void
-dwarf2_symbol_mark_computed (struct attribute *attr, struct symbol *sym,
+dwarf2_symbol_mark_computed (const struct attribute *attr, struct symbol *sym,
struct dwarf2_cu *cu, int is_block)
{
struct objfile *objfile = dwarf2_per_objfile->objfile;
struct dwarf2_per_objfile *data = d;
int ix;
- for (ix = 0; ix < dwarf2_per_objfile->n_comp_units; ++ix)
- VEC_free (dwarf2_per_cu_ptr,
- dwarf2_per_objfile->all_comp_units[ix]->imported_symtabs);
+ /* Make sure we don't accidentally use dwarf2_per_objfile while
+ cleaning up. */
+ dwarf2_per_objfile = NULL;
- for (ix = 0; ix < dwarf2_per_objfile->n_type_units; ++ix)
+ for (ix = 0; ix < data->n_comp_units; ++ix)
+ VEC_free (dwarf2_per_cu_ptr, data->all_comp_units[ix]->imported_symtabs);
+
+ for (ix = 0; ix < data->n_type_units; ++ix)
VEC_free (dwarf2_per_cu_ptr,
- dwarf2_per_objfile->all_type_units[ix]->per_cu.imported_symtabs);
+ data->all_type_units[ix]->per_cu.imported_symtabs);
+ xfree (data->all_type_units);
VEC_free (dwarf2_section_info_def, data->types);
struct psymtab_cu_index_map *map;
void **slot;
+ /* CU of a shared file from 'dwz -m' may be unused by this main file.
+ It may be referenced from a local scope but in such case it does not
+ need to be present in .gdb_index. */
+ if (psymtab == NULL)
+ continue;
+
if (psymtab->user == NULL)
recursively_write_psymbols (objfile, psymtab, symtab, psyms_seen, i);
projects / deliverable / binutils-gdb.git / blobdiff