#include "vec.h"
#include "c-lang.h"
#include "valprint.h"
+#include <ctype.h>
#include <fcntl.h>
#include "gdb_string.h"
/* When non-zero, dump DIEs after they are read in. */
static int dwarf2_die_debug = 0;
+/* When non-zero, cross-check physname against demangler. */
+static int check_physname = 0;
+
static int pagesize;
/* When set, the file that we're processing is known to have debugging
asection *asection;
gdb_byte *buffer;
bfd_size_type size;
- int was_mmapped;
+ /* Not NULL if the section was actually mmapped. */
+ void *map_addr;
+ /* Page aligned size of mmapped area. */
+ bfd_size_type map_len;
/* True if we have tried to read this section. */
int readin;
};
+typedef struct dwarf2_section_info dwarf2_section_info_def;
+DEF_VEC_O (dwarf2_section_info_def);
+
/* All offsets in the index are of this type. It must be
architecture-independent. */
typedef uint32_t offset_type;
a comment by the code that writes the index. */
struct mapped_index
{
+ /* Index data format version. */
+ int version;
+
/* The total length of the buffer. */
off_t total_size;
+
/* A pointer to the address table data. */
const gdb_byte *address_table;
+
/* Size of the address table data in bytes. */
offset_type address_table_size;
+
/* The symbol table, implemented as a hash table. */
const offset_type *symbol_table;
+
/* Size in slots, each slot is 2 offset_types. */
offset_type symbol_table_slots;
+
/* A pointer to the constant pool. */
const char *constant_pool;
};
struct dwarf2_section_info line;
struct dwarf2_section_info loc;
struct dwarf2_section_info macinfo;
+ struct dwarf2_section_info macro;
struct dwarf2_section_info str;
struct dwarf2_section_info ranges;
- struct dwarf2_section_info types;
struct dwarf2_section_info frame;
struct dwarf2_section_info eh_frame;
struct dwarf2_section_info gdb_index;
+ VEC (dwarf2_section_info_def) *types;
+
/* Back link. */
struct objfile *objfile;
static struct dwarf2_per_objfile *dwarf2_per_objfile;
-/* names of the debugging sections */
+/* Default names of the debugging sections. */
/* Note that if the debugging section has been compressed, it might
have a name like .zdebug_info. */
-#define INFO_SECTION "debug_info"
-#define ABBREV_SECTION "debug_abbrev"
-#define LINE_SECTION "debug_line"
-#define LOC_SECTION "debug_loc"
-#define MACINFO_SECTION "debug_macinfo"
-#define STR_SECTION "debug_str"
-#define RANGES_SECTION "debug_ranges"
-#define TYPES_SECTION "debug_types"
-#define FRAME_SECTION "debug_frame"
-#define EH_FRAME_SECTION "eh_frame"
-#define GDB_INDEX_SECTION "gdb_index"
+static const struct dwarf2_debug_sections dwarf2_elf_names = {
+ { ".debug_info", ".zdebug_info" },
+ { ".debug_abbrev", ".zdebug_abbrev" },
+ { ".debug_line", ".zdebug_line" },
+ { ".debug_loc", ".zdebug_loc" },
+ { ".debug_macinfo", ".zdebug_macinfo" },
+ { ".debug_macro", ".zdebug_macro" },
+ { ".debug_str", ".zdebug_str" },
+ { ".debug_ranges", ".zdebug_ranges" },
+ { ".debug_types", ".zdebug_types" },
+ { ".debug_frame", ".zdebug_frame" },
+ { ".eh_frame", NULL },
+ { ".gdb_index", ".zgdb_index" },
+ 23
+};
/* local data types */
DIEs for namespaces, we don't need to try to infer them
from mangled names. */
unsigned int has_namespace_info : 1;
+
+ /* This CU references .debug_loc. See the symtab->locations_valid field.
+ This test is imperfect as there may exist optimized debug code not using
+ any location list and still facing inlining issues if handled as
+ unoptimized code. For a future better test see GCC PR other/32998. */
+
+ unsigned int has_loclist : 1;
};
/* Persistent data held for a compilation unit, even when not
hash table and don't find it. */
unsigned int load_all_dies : 1;
- /* Non-zero if this CU is from .debug_types.
- Otherwise it's from .debug_info. */
- unsigned int from_debug_types : 1;
+ /* Non-null if this CU is from .debug_types; in which case it points
+ to the section. Otherwise it's from .debug_info. */
+ struct dwarf2_section_info *debug_type_section;
/* Set to non-NULL iff this CU is currently loaded. When it gets freed out
of the CU cache it gets reset to NULL again. */
{
ULONGEST signature;
- /* Offset in .debug_types of the TU (type_unit) for this type. */
- unsigned int offset;
-
/* Offset in .debug_types of the type defined by this TU. */
unsigned int type_offset;
}
static void
-dwarf2_macros_too_long_complaint (void)
+dwarf2_macros_too_long_complaint (struct dwarf2_section_info *section)
{
complaint (&symfile_complaints,
- _("macro info runs off end of `.debug_macinfo' section"));
+ _("macro info runs off end of `%s' section"),
+ section->asection->name);
}
static void
static void dwarf2_create_include_psymtab (char *, struct partial_symtab *,
struct objfile *);
+static void dwarf2_find_base_address (struct die_info *die,
+ struct dwarf2_cu *cu);
+
static void dwarf2_build_psymtabs_hard (struct objfile *);
static void scan_partial_symbols (struct partial_die_info *,
struct attribute *,
struct dwarf2_cu **);
+static struct signatured_type *lookup_signatured_type_at_offset
+ (struct objfile *objfile,
+ struct dwarf2_section_info *section,
+ unsigned int offset);
+
static void read_signatured_type_at_offset (struct objfile *objfile,
+ struct dwarf2_section_info *sect,
unsigned int offset);
static void read_signatured_type (struct objfile *,
struct dwarf2_cu *);
static void dwarf_decode_macros (struct line_header *, unsigned int,
- char *, bfd *, struct dwarf2_cu *);
+ char *, bfd *, struct dwarf2_cu *,
+ struct dwarf2_section_info *,
+ int);
static int attr_form_is_block (struct attribute *);
struct dwarf2_cu *cu);
/* Try to locate the sections we need for DWARF 2 debugging
- information and return true if we have enough to do something. */
+ information and return true if we have enough to do something.
+ NAMES points to the dwarf2 section names, or is NULL if the standard
+ ELF names are used. */
int
-dwarf2_has_info (struct objfile *objfile)
+dwarf2_has_info (struct objfile *objfile,
+ const struct dwarf2_debug_sections *names)
{
dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key);
if (!dwarf2_per_objfile)
set_objfile_data (objfile, dwarf2_objfile_data_key, data);
dwarf2_per_objfile = data;
- bfd_map_over_sections (objfile->obfd, dwarf2_locate_sections, NULL);
+ bfd_map_over_sections (objfile->obfd, dwarf2_locate_sections,
+ (void *) names);
dwarf2_per_objfile->objfile = objfile;
}
return (dwarf2_per_objfile->info.asection != NULL
&& dwarf2_per_objfile->abbrev.asection != NULL);
}
-/* When loading sections, we can either look for ".<name>", or for
- * ".z<name>", which indicates a compressed section. */
+/* When loading sections, we look either for uncompressed section or for
+ compressed section names. */
static int
-section_is_p (const char *section_name, const char *name)
+section_is_p (const char *section_name,
+ const struct dwarf2_section_names *names)
{
- return (section_name[0] == '.'
- && (strcmp (section_name + 1, name) == 0
- || (section_name[1] == 'z'
- && strcmp (section_name + 2, name) == 0)));
+ if (names->normal != NULL
+ && strcmp (section_name, names->normal) == 0)
+ return 1;
+ if (names->compressed != NULL
+ && strcmp (section_name, names->compressed) == 0)
+ return 1;
+ return 0;
}
/* This function is mapped across the sections and remembers the
in. */
static void
-dwarf2_locate_sections (bfd *abfd, asection *sectp, void *ignore_ptr)
+dwarf2_locate_sections (bfd *abfd, asection *sectp, void *vnames)
{
- if (section_is_p (sectp->name, INFO_SECTION))
+ const struct dwarf2_debug_sections *names;
+
+ if (vnames == NULL)
+ names = &dwarf2_elf_names;
+ else
+ names = (const struct dwarf2_debug_sections *) vnames;
+
+ if (section_is_p (sectp->name, &names->info))
{
dwarf2_per_objfile->info.asection = sectp;
dwarf2_per_objfile->info.size = bfd_get_section_size (sectp);
}
- else if (section_is_p (sectp->name, ABBREV_SECTION))
+ else if (section_is_p (sectp->name, &names->abbrev))
{
dwarf2_per_objfile->abbrev.asection = sectp;
dwarf2_per_objfile->abbrev.size = bfd_get_section_size (sectp);
}
- else if (section_is_p (sectp->name, LINE_SECTION))
+ else if (section_is_p (sectp->name, &names->line))
{
dwarf2_per_objfile->line.asection = sectp;
dwarf2_per_objfile->line.size = bfd_get_section_size (sectp);
}
- else if (section_is_p (sectp->name, LOC_SECTION))
+ else if (section_is_p (sectp->name, &names->loc))
{
dwarf2_per_objfile->loc.asection = sectp;
dwarf2_per_objfile->loc.size = bfd_get_section_size (sectp);
}
- else if (section_is_p (sectp->name, MACINFO_SECTION))
+ else if (section_is_p (sectp->name, &names->macinfo))
{
dwarf2_per_objfile->macinfo.asection = sectp;
dwarf2_per_objfile->macinfo.size = bfd_get_section_size (sectp);
}
- else if (section_is_p (sectp->name, STR_SECTION))
+ else if (section_is_p (sectp->name, &names->macro))
+ {
+ dwarf2_per_objfile->macro.asection = sectp;
+ dwarf2_per_objfile->macro.size = bfd_get_section_size (sectp);
+ }
+ else if (section_is_p (sectp->name, &names->str))
{
dwarf2_per_objfile->str.asection = sectp;
dwarf2_per_objfile->str.size = bfd_get_section_size (sectp);
}
- else if (section_is_p (sectp->name, FRAME_SECTION))
+ else if (section_is_p (sectp->name, &names->frame))
{
dwarf2_per_objfile->frame.asection = sectp;
dwarf2_per_objfile->frame.size = bfd_get_section_size (sectp);
}
- else if (section_is_p (sectp->name, EH_FRAME_SECTION))
+ else if (section_is_p (sectp->name, &names->eh_frame))
{
flagword aflag = bfd_get_section_flags (ignore_abfd, sectp);
dwarf2_per_objfile->eh_frame.size = bfd_get_section_size (sectp);
}
}
- else if (section_is_p (sectp->name, RANGES_SECTION))
+ else if (section_is_p (sectp->name, &names->ranges))
{
dwarf2_per_objfile->ranges.asection = sectp;
dwarf2_per_objfile->ranges.size = bfd_get_section_size (sectp);
}
- else if (section_is_p (sectp->name, TYPES_SECTION))
+ else if (section_is_p (sectp->name, &names->types))
{
- dwarf2_per_objfile->types.asection = sectp;
- dwarf2_per_objfile->types.size = bfd_get_section_size (sectp);
+ struct dwarf2_section_info type_section;
+
+ memset (&type_section, 0, sizeof (type_section));
+ type_section.asection = sectp;
+ type_section.size = bfd_get_section_size (sectp);
+
+ VEC_safe_push (dwarf2_section_info_def, dwarf2_per_objfile->types,
+ &type_section);
}
- else if (section_is_p (sectp->name, GDB_INDEX_SECTION))
+ else if (section_is_p (sectp->name, &names->gdb_index))
{
dwarf2_per_objfile->gdb_index.asection = sectp;
dwarf2_per_objfile->gdb_index.size = bfd_get_section_size (sectp);
if (info->readin)
return;
info->buffer = NULL;
- info->was_mmapped = 0;
+ info->map_addr = NULL;
info->readin = 1;
if (dwarf2_section_empty_p (info))
if (info->size > 4 * pagesize && (sectp->flags & SEC_RELOC) == 0)
{
- off_t pg_offset = sectp->filepos & ~(pagesize - 1);
- size_t map_length = info->size + sectp->filepos - pg_offset;
- caddr_t retbuf = bfd_mmap (abfd, 0, map_length, PROT_READ,
- MAP_PRIVATE, pg_offset);
+ info->buffer = bfd_mmap (abfd, 0, info->size, PROT_READ,
+ MAP_PRIVATE, sectp->filepos,
+ &info->map_addr, &info->map_len);
- if (retbuf != MAP_FAILED)
+ if ((caddr_t)info->buffer != MAP_FAILED)
{
- info->was_mmapped = 1;
- info->buffer = retbuf + (sectp->filepos & (pagesize - 1)) ;
#if HAVE_POSIX_MADVISE
- posix_madvise (retbuf, map_length, POSIX_MADV_WILLNEED);
+ posix_madvise (info->map_addr, info->map_len, POSIX_MADV_WILLNEED);
#endif
return;
}
SECTION_NAME. */
void
-dwarf2_get_section_info (struct objfile *objfile, const char *section_name,
+dwarf2_get_section_info (struct objfile *objfile,
+ enum dwarf2_section_enum sect,
asection **sectp, gdb_byte **bufp,
bfd_size_type *sizep)
{
*sizep = 0;
return;
}
- if (section_is_p (section_name, EH_FRAME_SECTION))
- info = &data->eh_frame;
- else if (section_is_p (section_name, FRAME_SECTION))
- info = &data->frame;
- else
- gdb_assert_not_reached ("unexpected section");
+ switch (sect)
+ {
+ case DWARF2_DEBUG_FRAME:
+ info = &data->frame;
+ break;
+ case DWARF2_EH_FRAME:
+ info = &data->eh_frame;
+ break;
+ default:
+ gdb_assert_not_reached ("unexpected section");
+ }
dwarf2_read_section (objfile, info);
delete_file_name_entry, xcalloc, xfree);
}
+/* Read in PER_CU->CU. This function is unrelated to symtabs, symtab would
+ have to be created afterwards. You should call age_cached_comp_units after
+ processing PER_CU->CU. dw2_setup must have been already called. */
+
+static void
+load_cu (struct dwarf2_per_cu_data *per_cu)
+{
+ if (per_cu->debug_type_section)
+ read_signatured_type_at_offset (per_cu->objfile,
+ per_cu->debug_type_section,
+ per_cu->offset);
+ else
+ load_full_comp_unit (per_cu, per_cu->objfile);
+
+ dwarf2_find_base_address (per_cu->cu->dies, per_cu->cu);
+
+ gdb_assert (per_cu->cu != NULL);
+}
+
/* Read in the symbols for PER_CU. OBJFILE is the objfile from which
this CU came. */
queue_comp_unit (per_cu, objfile);
- if (per_cu->from_debug_types)
- read_signatured_type_at_offset (objfile, per_cu->offset);
- else
- load_full_comp_unit (per_cu, objfile);
+ load_cu (per_cu);
process_queue (objfile);
static int
create_signatured_type_table_from_index (struct objfile *objfile,
+ struct dwarf2_section_info *section,
const gdb_byte *bytes,
offset_type elements)
{
type_sig = OBSTACK_ZALLOC (&objfile->objfile_obstack,
struct signatured_type);
type_sig->signature = signature;
- type_sig->offset = offset;
type_sig->type_offset = type_offset;
- type_sig->per_cu.from_debug_types = 1;
+ type_sig->per_cu.debug_type_section = section;
type_sig->per_cu.offset = offset;
type_sig->per_cu.objfile = objfile;
type_sig->per_cu.v.quick
do_cleanups (cleanup);
}
-/* The hash function for strings in the mapped index. This is the
- same as the hashtab.c hash function, but we keep a separate copy to
- maintain control over the implementation. This is necessary
- because the hash function is tied to the format of the mapped index
- file. */
+/* The hash function for strings in the mapped index. This is the same as
+ SYMBOL_HASH_NEXT, but we keep a separate copy to maintain control over the
+ implementation. This is necessary because the hash function is tied to the
+ format of the mapped index file. The hash values do not have to match with
+ SYMBOL_HASH_NEXT.
+
+ Use INT_MAX for INDEX_VERSION if you generate the current index format. */
static hashval_t
-mapped_index_string_hash (const void *p)
+mapped_index_string_hash (int index_version, const void *p)
{
const unsigned char *str = (const unsigned char *) p;
hashval_t r = 0;
unsigned char c;
while ((c = *str++) != 0)
- r = r * 67 + c - 113;
+ {
+ if (index_version >= 5)
+ c = tolower (c);
+ r = r * 67 + c - 113;
+ }
return r;
}
find_slot_in_mapped_hash (struct mapped_index *index, const char *name,
offset_type **vec_out)
{
- offset_type hash = mapped_index_string_hash (name);
+ struct cleanup *back_to = make_cleanup (null_cleanup, 0);
+ offset_type hash;
offset_type slot, step;
+ int (*cmp) (const char *, const char *);
+
+ if (current_language->la_language == language_cplus
+ || current_language->la_language == language_java
+ || current_language->la_language == language_fortran)
+ {
+ /* NAME is already canonical. Drop any qualifiers as .gdb_index does
+ not contain any. */
+ const char *paren = strchr (name, '(');
+
+ if (paren)
+ {
+ char *dup;
+
+ dup = xmalloc (paren - name + 1);
+ memcpy (dup, name, paren - name);
+ dup[paren - name] = 0;
+
+ make_cleanup (xfree, dup);
+ name = dup;
+ }
+ }
+
+ /* Index version 4 did not support case insensitive searches. But the
+ indexes for case insensitive languages are built in lowercase, therefore
+ simulate our NAME being searched is also lowercased. */
+ hash = mapped_index_string_hash ((index->version == 4
+ && case_sensitivity == case_sensitive_off
+ ? 5 : index->version),
+ name);
slot = hash & (index->symbol_table_slots - 1);
step = ((hash * 17) & (index->symbol_table_slots - 1)) | 1;
+ cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp);
for (;;)
{
offset_type i = 2 * slot;
const char *str;
if (index->symbol_table[i] == 0 && index->symbol_table[i + 1] == 0)
- return 0;
+ {
+ do_cleanups (back_to);
+ return 0;
+ }
str = index->constant_pool + MAYBE_SWAP (index->symbol_table[i]);
- if (!strcmp (name, str))
+ if (!cmp (name, str))
{
*vec_out = (offset_type *) (index->constant_pool
+ MAYBE_SWAP (index->symbol_table[i + 1]));
+ do_cleanups (back_to);
return 1;
}
/* Version check. */
version = MAYBE_SWAP (*(offset_type *) addr);
/* Versions earlier than 3 emitted every copy of a psymbol. This
- causes the index to behave very poorly for certain requests. Version 4
+ causes the index to behave very poorly for certain requests. Version 3
contained incomplete addrmap. So, it seems better to just ignore such
- indices. */
+ indices. Index version 4 uses a different hash function than index
+ version 5 and later. */
if (version < 4)
return 0;
/* Indexes with higher version than the one supported by GDB may be no
longer backward compatible. */
- if (version > 4)
+ if (version > 5)
return 0;
map = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct mapped_index);
+ map->version = version;
map->total_size = dwarf2_per_objfile->gdb_index.size;
metadata = (offset_type *) (addr + sizeof (offset_type));
if (!create_cus_from_index (objfile, cu_list, cu_list_elements))
return 0;
- if (types_list_elements
- && !create_signatured_type_table_from_index (objfile, types_list,
- types_list_elements))
- return 0;
+ if (types_list_elements)
+ {
+ struct dwarf2_section_info *section;
+
+ /* We can only handle a single .debug_types when we have an
+ index. */
+ if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) != 1)
+ return 0;
+
+ section = VEC_index (dwarf2_section_info_def,
+ dwarf2_per_objfile->types, 0);
+
+ if (!create_signatured_type_table_from_index (objfile, section,
+ types_list,
+ types_list_elements))
+ return 0;
+ }
create_addrmap_from_index (objfile, map);
init_one_comp_unit (&cu, objfile);
cleanups = make_cleanup (free_stack_comp_unit, &cu);
- if (this_cu->from_debug_types)
- sec = &dwarf2_per_objfile->types;
+ if (this_cu->debug_type_section)
+ sec = this_cu->debug_type_section;
else
sec = &dwarf2_per_objfile->info;
dwarf2_read_section (objfile, sec);
dwarf2_read_abbrevs (abfd, &cu);
make_cleanup (dwarf2_free_abbrev_table, &cu);
- if (this_cu->from_debug_types)
+ if (this_cu->debug_type_section)
info_ptr += 8 /*signature*/ + cu.header.offset_size;
init_cu_die_reader (&reader_specs, &cu);
read_full_die (&reader_specs, &comp_unit_die, info_ptr,
static void
dw2_pre_expand_symtabs_matching (struct objfile *objfile,
- int kind, const char *name,
+ enum block_enum block_kind, const char *name,
domain_enum domain)
{
dw2_do_expand_symtabs_matching (objfile, name);
dw2_expand_symtabs_matching (struct objfile *objfile,
int (*file_matcher) (const char *, void *),
int (*name_matcher) (const char *, void *),
- domain_enum kind,
+ enum search_domain kind,
void *data)
{
int i;
return;
index = dwarf2_per_objfile->index_table;
- for (i = 0; i < (dwarf2_per_objfile->n_comp_units
- + dwarf2_per_objfile->n_type_comp_units); ++i)
- {
- int j;
- struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i);
- struct quick_file_names *file_data;
+ if (file_matcher != NULL)
+ for (i = 0; i < (dwarf2_per_objfile->n_comp_units
+ + dwarf2_per_objfile->n_type_comp_units); ++i)
+ {
+ int j;
+ struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i);
+ struct quick_file_names *file_data;
- per_cu->v.quick->mark = 0;
- if (per_cu->v.quick->symtab)
- continue;
+ per_cu->v.quick->mark = 0;
+ if (per_cu->v.quick->symtab)
+ continue;
- file_data = dw2_get_file_names (objfile, per_cu);
- if (file_data == NULL)
- continue;
+ file_data = dw2_get_file_names (objfile, per_cu);
+ if (file_data == NULL)
+ continue;
- for (j = 0; j < file_data->num_file_names; ++j)
- {
- if (file_matcher (file_data->file_names[j], data))
- {
- per_cu->v.quick->mark = 1;
- break;
- }
- }
- }
+ for (j = 0; j < file_data->num_file_names; ++j)
+ {
+ if (file_matcher (file_data->file_names[j], data))
+ {
+ per_cu->v.quick->mark = 1;
+ break;
+ }
+ }
+ }
for (iter = 0; iter < index->symbol_table_slots; ++iter)
{
struct dwarf2_per_cu_data *per_cu;
per_cu = dw2_get_cu (MAYBE_SWAP (vec[vec_idx + 1]));
- if (per_cu->v.quick->mark)
+ if (file_matcher == NULL || per_cu->v.quick->mark)
dw2_instantiate_symtab (objfile, per_cu);
}
}
}
static void
-dw2_map_symbol_names (struct objfile *objfile,
- void (*fun) (const char *, void *),
- void *data)
-{
- offset_type iter;
- struct mapped_index *index;
-
- dw2_setup (objfile);
-
- /* index_table is NULL if OBJF_READNOW. */
- if (!dwarf2_per_objfile->index_table)
- return;
- index = dwarf2_per_objfile->index_table;
-
- for (iter = 0; iter < index->symbol_table_slots; ++iter)
- {
- offset_type idx = 2 * iter;
- const char *name;
- offset_type *vec, vec_len, vec_idx;
-
- if (index->symbol_table[idx] == 0 && index->symbol_table[idx + 1] == 0)
- continue;
-
- name = (index->constant_pool + MAYBE_SWAP (index->symbol_table[idx]));
-
- (*fun) (name, data);
- }
-}
-
-static void
-dw2_map_symbol_filenames (struct objfile *objfile,
- void (*fun) (const char *, const char *, void *),
+dw2_map_symbol_filenames (struct objfile *objfile, symbol_filename_ftype *fun,
void *data)
{
int i;
dw2_map_matching_symbols,
dw2_expand_symtabs_matching,
dw2_find_pc_sect_symtab,
- dw2_map_symbol_names,
dw2_map_symbol_filenames
};
if (dwarf2_read_index (objfile))
return 1;
- dwarf2_build_psymtabs (objfile);
return 0;
}
static gdb_byte *
read_type_comp_unit_head (struct comp_unit_head *cu_header,
+ struct dwarf2_section_info *section,
ULONGEST *signature,
gdb_byte *types_ptr, bfd *abfd)
{
gdb_byte *initial_types_ptr = types_ptr;
- dwarf2_read_section (dwarf2_per_objfile->objfile,
- &dwarf2_per_objfile->types);
- cu_header->offset = types_ptr - dwarf2_per_objfile->types.buffer;
+ dwarf2_read_section (dwarf2_per_objfile->objfile, section);
+ cu_header->offset = types_ptr - section->buffer;
types_ptr = read_comp_unit_head (cu_header, types_ptr, abfd);
static int
create_debug_types_hash_table (struct objfile *objfile)
{
- gdb_byte *info_ptr;
- htab_t types_htab;
+ htab_t types_htab = NULL;
struct dwarf2_per_cu_data **iter;
+ int ix;
+ struct dwarf2_section_info *section;
- dwarf2_read_section (objfile, &dwarf2_per_objfile->types);
- info_ptr = dwarf2_per_objfile->types.buffer;
-
- if (info_ptr == NULL)
+ if (VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types))
{
dwarf2_per_objfile->signatured_types = NULL;
return 0;
}
- types_htab = allocate_signatured_type_table (objfile);
+ for (ix = 0;
+ VEC_iterate (dwarf2_section_info_def, dwarf2_per_objfile->types,
+ ix, section);
+ ++ix)
+ {
+ gdb_byte *info_ptr, *end_ptr;
- if (dwarf2_die_debug)
- fprintf_unfiltered (gdb_stdlog, "Signatured types:\n");
+ dwarf2_read_section (objfile, section);
+ info_ptr = section->buffer;
- while (info_ptr < dwarf2_per_objfile->types.buffer
- + dwarf2_per_objfile->types.size)
- {
- unsigned int offset;
- unsigned int offset_size;
- unsigned int type_offset;
- unsigned int length, initial_length_size;
- unsigned short version;
- ULONGEST signature;
- struct signatured_type *type_sig;
- void **slot;
- gdb_byte *ptr = info_ptr;
+ if (info_ptr == NULL)
+ continue;
- offset = ptr - dwarf2_per_objfile->types.buffer;
+ if (types_htab == NULL)
+ types_htab = allocate_signatured_type_table (objfile);
- /* We need to read the type's signature in order to build the hash
- table, but we don't need to read anything else just yet. */
+ if (dwarf2_die_debug)
+ fprintf_unfiltered (gdb_stdlog, "Signatured types:\n");
- /* Sanity check to ensure entire cu is present. */
- length = read_initial_length (objfile->obfd, ptr, &initial_length_size);
- if (ptr + length + initial_length_size
- > dwarf2_per_objfile->types.buffer + dwarf2_per_objfile->types.size)
+ end_ptr = info_ptr + section->size;
+ while (info_ptr < end_ptr)
{
- complaint (&symfile_complaints,
- _("debug type entry runs off end "
- "of `.debug_types' section, ignored"));
- break;
- }
+ unsigned int offset;
+ unsigned int offset_size;
+ unsigned int type_offset;
+ unsigned int length, initial_length_size;
+ unsigned short version;
+ ULONGEST signature;
+ struct signatured_type *type_sig;
+ void **slot;
+ gdb_byte *ptr = info_ptr;
- offset_size = initial_length_size == 4 ? 4 : 8;
- ptr += initial_length_size;
- version = bfd_get_16 (objfile->obfd, ptr);
- ptr += 2;
- ptr += offset_size; /* abbrev offset */
- ptr += 1; /* address size */
- signature = bfd_get_64 (objfile->obfd, ptr);
- ptr += 8;
- type_offset = read_offset_1 (objfile->obfd, ptr, offset_size);
+ offset = ptr - section->buffer;
- type_sig = obstack_alloc (&objfile->objfile_obstack, sizeof (*type_sig));
- memset (type_sig, 0, sizeof (*type_sig));
- type_sig->signature = signature;
- type_sig->offset = offset;
- type_sig->type_offset = type_offset;
- type_sig->per_cu.objfile = objfile;
- type_sig->per_cu.from_debug_types = 1;
+ /* We need to read the type's signature in order to build the hash
+ table, but we don't need to read anything else just yet. */
- slot = htab_find_slot (types_htab, type_sig, INSERT);
- gdb_assert (slot != NULL);
- *slot = type_sig;
+ /* Sanity check to ensure entire cu is present. */
+ length = read_initial_length (objfile->obfd, ptr,
+ &initial_length_size);
+ if (ptr + length + initial_length_size > end_ptr)
+ {
+ complaint (&symfile_complaints,
+ _("debug type entry runs off end "
+ "of `.debug_types' section, ignored"));
+ break;
+ }
- if (dwarf2_die_debug)
- fprintf_unfiltered (gdb_stdlog, " offset 0x%x, signature 0x%s\n",
- offset, phex (signature, sizeof (signature)));
+ offset_size = initial_length_size == 4 ? 4 : 8;
+ ptr += initial_length_size;
+ version = bfd_get_16 (objfile->obfd, ptr);
+ ptr += 2;
+ ptr += offset_size; /* abbrev offset */
+ ptr += 1; /* address size */
+ signature = bfd_get_64 (objfile->obfd, ptr);
+ ptr += 8;
+ type_offset = read_offset_1 (objfile->obfd, ptr, offset_size);
+
+ type_sig = obstack_alloc (&objfile->objfile_obstack, sizeof (*type_sig));
+ memset (type_sig, 0, sizeof (*type_sig));
+ type_sig->signature = signature;
+ type_sig->type_offset = type_offset;
+ type_sig->per_cu.objfile = objfile;
+ type_sig->per_cu.debug_type_section = section;
+ type_sig->per_cu.offset = offset;
+
+ slot = htab_find_slot (types_htab, type_sig, INSERT);
+ gdb_assert (slot != NULL);
+ if (*slot != NULL)
+ {
+ const struct signatured_type *dup_sig = *slot;
+
+ complaint (&symfile_complaints,
+ _("debug type entry at offset 0x%x is duplicate to the "
+ "entry at offset 0x%x, signature 0x%s"),
+ offset, dup_sig->per_cu.offset,
+ phex (signature, sizeof (signature)));
+ gdb_assert (signature == dup_sig->signature);
+ }
+ *slot = type_sig;
- info_ptr = info_ptr + initial_length_size + length;
+ if (dwarf2_die_debug)
+ fprintf_unfiltered (gdb_stdlog, " offset 0x%x, signature 0x%s\n",
+ offset, phex (signature, sizeof (signature)));
+
+ info_ptr = info_ptr + initial_length_size + length;
+ }
}
dwarf2_per_objfile->signatured_types = types_htab;
if (dwarf2_per_objfile->signatured_types == NULL)
{
complaint (&symfile_complaints,
- _("missing `.debug_types' section for DW_FORM_sig8 die"));
+ _("missing `.debug_types' section for DW_FORM_ref_sig8 die"));
return 0;
}
{
reader->abfd = cu->objfile->obfd;
reader->cu = cu;
- if (cu->per_cu->from_debug_types)
+ if (cu->per_cu->debug_type_section)
{
- gdb_assert (dwarf2_per_objfile->types.readin);
- reader->buffer = dwarf2_per_objfile->types.buffer;
+ gdb_assert (cu->per_cu->debug_type_section->readin);
+ reader->buffer = cu->per_cu->debug_type_section->buffer;
}
else
{
make_cleanup (dwarf2_free_abbrev_table, &cu);
/* Read the compilation unit die. */
- if (this_cu->from_debug_types)
+ if (this_cu->debug_type_section)
info_ptr += 8 /*signature*/ + cu.header.offset_size;
init_cu_die_reader (&reader_specs, &cu);
info_ptr = read_full_die (&reader_specs, &comp_unit_die, info_ptr,
&has_children);
- if (this_cu->from_debug_types)
+ if (this_cu->debug_type_section)
{
- /* offset,length haven't been set yet for type units. */
- this_cu->offset = cu.header.offset;
+ /* LENGTH has not been set yet for type units. */
+ gdb_assert (this_cu->offset == cu.header.offset);
this_cu->length = cu.header.length + cu.header.initial_length_size;
}
else if (comp_unit_die->tag == DW_TAG_partial_unit)
info_ptr = (beg_of_comp_unit + cu.header.length
+ cu.header.initial_length_size);
- if (this_cu->from_debug_types)
+ if (this_cu->debug_type_section)
{
/* It's not clear we want to do anything with stmt lists here.
Waiting to see what gcc ultimately does. */
this_cu = &entry->per_cu;
- gdb_assert (dwarf2_per_objfile->types.readin);
+ gdb_assert (this_cu->debug_type_section->readin);
process_psymtab_comp_unit (objfile, this_cu,
- dwarf2_per_objfile->types.buffer,
- dwarf2_per_objfile->types.buffer + entry->offset,
- dwarf2_per_objfile->types.size);
+ this_cu->debug_type_section->buffer,
+ (this_cu->debug_type_section->buffer
+ + this_cu->offset),
+ this_cu->debug_type_section->size);
return 1;
}
struct die_reader_specs reader_specs;
int read_cu = 0;
- gdb_assert (! this_cu->from_debug_types);
+ gdb_assert (! this_cu->debug_type_section);
gdb_assert (dwarf2_per_objfile->info.readin);
info_ptr = dwarf2_per_objfile->info.buffer + this_cu->offset;
break;
case DW_FORM_data8:
case DW_FORM_ref8:
- case DW_FORM_sig8:
+ case DW_FORM_ref_sig8:
info_ptr += 8;
break;
case DW_FORM_string:
struct attribute *attr;
int read_cu = 0;
- gdb_assert (! per_cu->from_debug_types);
+ gdb_assert (! per_cu->debug_type_section);
/* Set local variables from the partial symbol table info. */
offset = per_cu->offset;
struct delayed_method_info *mi;
for (i = 0; VEC_iterate (delayed_method_info, cu->method_list, i, mi) ; ++i)
{
- char *physname;
+ const char *physname;
struct fn_fieldlist *fn_flp
= &TYPE_FN_FIELDLIST (mi->type, mi->fnfield_index);
- physname = (char *) dwarf2_physname ((char *) mi->name, mi->die, cu);
+ physname = dwarf2_physname ((char *) mi->name, mi->die, cu);
fn_flp->fn_fields[mi->index].physname = physname ? physname : "";
}
}
cu->list_in_scope = &file_symbols;
- dwarf2_find_base_address (cu->dies, cu);
-
/* Do line number decoding in read_file_scope () */
process_die (cu->dies, cu);
symtab = end_symtab (highpc + baseaddr, objfile, SECT_OFF_TEXT (objfile));
- /* Set symtab language to language from DW_AT_language.
- If the compilation is from a C file generated by language preprocessors,
- do not set the language if it was already deduced by start_subfile. */
- if (symtab != NULL
- && !(cu->language == language_c && symtab->language != language_c))
+ if (symtab != NULL)
{
- symtab->language = cu->language;
+ int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer);
+
+ /* Set symtab language to language from DW_AT_language. If the
+ compilation is from a C file generated by language preprocessors, do
+ not set the language if it was already deduced by start_subfile. */
+ if (!(cu->language == language_c && symtab->language != language_c))
+ symtab->language = cu->language;
+
+ /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can
+ produce DW_AT_location with location lists but it can be possibly
+ invalid without -fvar-tracking.
+
+ For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not
+ needed, it would be wrong due to missing DW_AT_producer there.
+
+ Still one can confuse GDB by using non-standard GCC compilation
+ options - this waits on GCC PR other/32998 (-frecord-gcc-switches).
+ */
+ if (cu->has_loclist && gcc_4_minor >= 0)
+ symtab->locations_valid = 1;
+
+ if (gcc_4_minor >= 5)
+ symtab->epilogue_unwind_valid = 1;
}
if (dwarf2_per_objfile->using_index)
{
struct type *type = read_type_die (die, cu);
- c_type_print_args (type, buf, 0, cu->language);
+ c_type_print_args (type, buf, 1, cu->language);
if (cu->language == language_java)
{
static const char *
dwarf2_physname (char *name, struct die_info *die, struct dwarf2_cu *cu)
{
- return dwarf2_compute_name (name, die, cu, 1);
+ struct attribute *attr;
+ const char *retval, *mangled = NULL, *canon = NULL;
+ struct cleanup *back_to;
+ int need_copy = 1;
+
+ /* In this case dwarf2_compute_name is just a shortcut not building anything
+ on its own. */
+ if (!die_needs_namespace (die, cu))
+ return dwarf2_compute_name (name, die, cu, 1);
+
+ back_to = make_cleanup (null_cleanup, NULL);
+
+ attr = dwarf2_attr (die, DW_AT_linkage_name, cu);
+ if (!attr)
+ attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu);
+
+ /* DW_AT_linkage_name is missing in some cases - depend on what GDB
+ has computed. */
+ if (attr && DW_STRING (attr))
+ {
+ char *demangled;
+
+ mangled = DW_STRING (attr);
+
+ /* Use DMGL_RET_DROP for C++ template functions to suppress their return
+ type. It is easier for GDB users to search for such functions as
+ `name(params)' than `long name(params)'. In such case the minimal
+ symbol names do not match the full symbol names but for template
+ functions there is never a need to look up their definition from their
+ declaration so the only disadvantage remains the minimal symbol
+ variant `long name(params)' does not have the proper inferior type.
+ */
+
+ demangled = cplus_demangle (mangled, (DMGL_PARAMS | DMGL_ANSI
+ | (cu->language == language_java
+ ? DMGL_JAVA | DMGL_RET_POSTFIX
+ : DMGL_RET_DROP)));
+ if (demangled)
+ {
+ make_cleanup (xfree, demangled);
+ canon = demangled;
+ }
+ else
+ {
+ canon = mangled;
+ need_copy = 0;
+ }
+ }
+
+ if (canon == NULL || check_physname)
+ {
+ const char *physname = dwarf2_compute_name (name, die, cu, 1);
+
+ if (canon != NULL && strcmp (physname, canon) != 0)
+ {
+ /* It may not mean a bug in GDB. The compiler could also
+ compute DW_AT_linkage_name incorrectly. But in such case
+ GDB would need to be bug-to-bug compatible. */
+
+ complaint (&symfile_complaints,
+ _("Computed physname <%s> does not match demangled <%s> "
+ "(from linkage <%s>) - DIE at 0x%x [in module %s]"),
+ physname, canon, mangled, die->offset, cu->objfile->name);
+
+ /* Prefer DW_AT_linkage_name (in the CANON form) - when it
+ is available here - over computed PHYSNAME. It is safer
+ against both buggy GDB and buggy compilers. */
+
+ retval = canon;
+ }
+ else
+ {
+ retval = physname;
+ need_copy = 0;
+ }
+ }
+ else
+ retval = canon;
+
+ if (need_copy)
+ retval = obsavestring (retval, strlen (retval),
+ &cu->objfile->objfile_obstack);
+
+ do_cleanups (back_to);
+ return retval;
}
/* Read the import statement specified by the given die and record it. */
read_import_statement (struct die_info *die, struct dwarf2_cu *cu)
{
struct attribute *import_attr;
- struct die_info *imported_die;
+ struct die_info *imported_die, *child_die;
struct dwarf2_cu *imported_cu;
const char *imported_name;
const char *imported_name_prefix;
const char *import_alias;
const char *imported_declaration = NULL;
const char *import_prefix;
+ VEC (const_char_ptr) *excludes = NULL;
+ struct cleanup *cleanups;
char *temp;
else
canonical_name = imported_name;
+ cleanups = make_cleanup (VEC_cleanup (const_char_ptr), &excludes);
+
+ if (die->tag == DW_TAG_imported_module && cu->language == language_fortran)
+ for (child_die = die->child; child_die && child_die->tag;
+ child_die = sibling_die (child_die))
+ {
+ /* DWARF-4: A Fortran use statement with a “rename list” may be
+ represented by an imported module entry with an import attribute
+ referring to the module and owned entries corresponding to those
+ entities that are renamed as part of being imported. */
+
+ if (child_die->tag != DW_TAG_imported_declaration)
+ {
+ complaint (&symfile_complaints,
+ _("child DW_TAG_imported_declaration expected "
+ "- DIE at 0x%x [in module %s]"),
+ child_die->offset, cu->objfile->name);
+ continue;
+ }
+
+ import_attr = dwarf2_attr (child_die, DW_AT_import, cu);
+ if (import_attr == NULL)
+ {
+ complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"),
+ dwarf_tag_name (child_die->tag));
+ continue;
+ }
+
+ imported_cu = cu;
+ imported_die = follow_die_ref_or_sig (child_die, import_attr,
+ &imported_cu);
+ imported_name = dwarf2_name (imported_die, imported_cu);
+ if (imported_name == NULL)
+ {
+ complaint (&symfile_complaints,
+ _("child DW_TAG_imported_declaration has unknown "
+ "imported name - DIE at 0x%x [in module %s]"),
+ child_die->offset, cu->objfile->name);
+ continue;
+ }
+
+ VEC_safe_push (const_char_ptr, excludes, imported_name);
+
+ process_die (child_die, cu);
+ }
+
cp_add_using_directive (import_prefix,
canonical_name,
import_alias,
imported_declaration,
+ excludes,
&cu->objfile->objfile_obstack);
+
+ do_cleanups (cleanups);
}
static void
*name = "<unknown>";
}
+/* Handle DW_AT_stmt_list for a compilation unit. */
+
+static void
+handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu,
+ const char *comp_dir)
+{
+ struct attribute *attr;
+ struct objfile *objfile = cu->objfile;
+ bfd *abfd = objfile->obfd;
+
+ /* Decode line number information if present. We do this before
+ processing child DIEs, so that the line header table is available
+ for DW_AT_decl_file. */
+ attr = dwarf2_attr (die, DW_AT_stmt_list, cu);
+ if (attr)
+ {
+ unsigned int line_offset = DW_UNSND (attr);
+ struct line_header *line_header
+ = dwarf_decode_line_header (line_offset, abfd, cu);
+
+ if (line_header)
+ {
+ cu->line_header = line_header;
+ make_cleanup (free_cu_line_header, cu);
+ dwarf_decode_lines (line_header, comp_dir, abfd, cu, NULL);
+ }
+ }
+}
+
/* Process DW_TAG_compile_unit. */
static void
char *comp_dir = NULL;
struct die_info *child_die;
bfd *abfd = objfile->obfd;
- struct line_header *line_header = 0;
CORE_ADDR baseaddr;
baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
initialize_cu_func_list (cu);
- /* Decode line number information if present. We do this before
- processing child DIEs, so that the line header table is available
- for DW_AT_decl_file. */
- attr = dwarf2_attr (die, DW_AT_stmt_list, cu);
- if (attr)
- {
- unsigned int line_offset = DW_UNSND (attr);
- line_header = dwarf_decode_line_header (line_offset, abfd, cu);
- if (line_header)
- {
- cu->line_header = line_header;
- make_cleanup (free_cu_line_header, cu);
- dwarf_decode_lines (line_header, comp_dir, abfd, cu, NULL);
- }
- }
+ handle_DW_AT_stmt_list (die, cu, comp_dir);
/* Process all dies in compilation unit. */
if (die->child != NULL)
refers to information in the line number info statement program
header, so we can only read it if we've read the header
successfully. */
- attr = dwarf2_attr (die, DW_AT_macro_info, cu);
- if (attr && line_header)
+ attr = dwarf2_attr (die, DW_AT_GNU_macros, cu);
+ if (attr && cu->line_header)
+ {
+ if (dwarf2_attr (die, DW_AT_macro_info, cu))
+ complaint (&symfile_complaints,
+ _("CU refers to both DW_AT_GNU_macros and DW_AT_macro_info"));
+
+ dwarf_decode_macros (cu->line_header, DW_UNSND (attr),
+ comp_dir, abfd, cu,
+ &dwarf2_per_objfile->macro, 1);
+ }
+ else
{
- unsigned int macro_offset = DW_UNSND (attr);
+ attr = dwarf2_attr (die, DW_AT_macro_info, cu);
+ if (attr && cu->line_header)
+ {
+ unsigned int macro_offset = DW_UNSND (attr);
- dwarf_decode_macros (line_header, macro_offset,
- comp_dir, abfd, cu);
+ dwarf_decode_macros (cu->line_header, macro_offset,
+ comp_dir, abfd, cu,
+ &dwarf2_per_objfile->macinfo, 0);
+ }
}
do_cleanups (back_to);
}
record_debugformat ("DWARF 2");
record_producer (cu->producer);
+ handle_DW_AT_stmt_list (die, cu, comp_dir);
+
/* Process the dies in the type unit. */
if (die->child == NULL)
{
}
}
- if (high < low)
+ /* read_partial_die has also the strict LOW < HIGH requirement. */
+ if (high <= low)
return 0;
/* When using the GNU linker, .gnu.linkonce. sections are used to
}
}
+/* Check for GCC PR debug/45124 fix which is not present in any G++ version up
+ to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed
+ during 4.6.0 experimental. */
+
+static int
+producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu)
+{
+ const char *cs;
+ int major, minor, release;
+
+ if (cu->producer == NULL)
+ {
+ /* For unknown compilers expect their behavior is DWARF version
+ compliant.
+
+ GCC started to support .debug_types sections by -gdwarf-4 since
+ gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer
+ for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4
+ combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility
+ interpreted incorrectly by GDB now - GCC PR debug/48229. */
+
+ return 0;
+ }
+
+ /* Skip any identifier after "GNU " - such as "C++" or "Java". */
+
+ if (strncmp (cu->producer, "GNU ", strlen ("GNU ")) != 0)
+ {
+ /* For non-GCC compilers expect their behavior is DWARF version
+ compliant. */
+
+ return 0;
+ }
+ cs = &cu->producer[strlen ("GNU ")];
+ while (*cs && !isdigit (*cs))
+ cs++;
+ if (sscanf (cs, "%d.%d.%d", &major, &minor, &release) != 3)
+ {
+ /* Not recognized as GCC. */
+
+ return 0;
+ }
+
+ return major < 4 || (major == 4 && minor < 6);
+}
+
+/* Return the default accessibility type if it is not overriden by
+ DW_AT_accessibility. */
+
+static enum dwarf_access_attribute
+dwarf2_default_access_attribute (struct die_info *die, struct dwarf2_cu *cu)
+{
+ if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu))
+ {
+ /* The default DWARF 2 accessibility for members is public, the default
+ accessibility for inheritance is private. */
+
+ if (die->tag != DW_TAG_inheritance)
+ return DW_ACCESS_public;
+ else
+ return DW_ACCESS_private;
+ }
+ else
+ {
+ /* DWARF 3+ defines the default accessibility a different way. The same
+ rules apply now for DW_TAG_inheritance as for the members and it only
+ depends on the container kind. */
+
+ if (die->parent->tag == DW_TAG_class_type)
+ return DW_ACCESS_private;
+ else
+ return DW_ACCESS_public;
+ }
+}
+
+/* Look for DW_AT_data_member_location. Set *OFFSET to the byte
+ offset. If the attribute was not found return 0, otherwise return
+ 1. If it was found but could not properly be handled, set *OFFSET
+ to 0. */
+
+static int
+handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu,
+ LONGEST *offset)
+{
+ struct attribute *attr;
+
+ attr = dwarf2_attr (die, DW_AT_data_member_location, cu);
+ if (attr != NULL)
+ {
+ *offset = 0;
+
+ /* Note that we do not check for a section offset first here.
+ This is because DW_AT_data_member_location is new in DWARF 4,
+ so if we see it, we can assume that a constant form is really
+ a constant and not a section offset. */
+ if (attr_form_is_constant (attr))
+ *offset = dwarf2_get_attr_constant_value (attr, 0);
+ else if (attr_form_is_section_offset (attr))
+ dwarf2_complex_location_expr_complaint ();
+ else if (attr_form_is_block (attr))
+ *offset = decode_locdesc (DW_BLOCK (attr), cu);
+ else
+ dwarf2_complex_location_expr_complaint ();
+
+ return 1;
+ }
+
+ return 0;
+}
+
/* Add an aggregate field to the field list. */
static void
}
fip->nfields++;
- /* Handle accessibility and virtuality of field.
- The default accessibility for members is public, the default
- accessibility for inheritance is private. */
- if (die->tag != DW_TAG_inheritance)
- new_field->accessibility = DW_ACCESS_public;
- else
- new_field->accessibility = DW_ACCESS_private;
- new_field->virtuality = DW_VIRTUALITY_none;
-
attr = dwarf2_attr (die, DW_AT_accessibility, cu);
if (attr)
new_field->accessibility = DW_UNSND (attr);
+ else
+ new_field->accessibility = dwarf2_default_access_attribute (die, cu);
if (new_field->accessibility != DW_ACCESS_public)
fip->non_public_fields = 1;
+
attr = dwarf2_attr (die, DW_AT_virtuality, cu);
if (attr)
new_field->virtuality = DW_UNSND (attr);
+ else
+ new_field->virtuality = DW_VIRTUALITY_none;
fp = &new_field->field;
if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu))
{
+ LONGEST offset;
+
/* Data member other than a C++ static data member. */
/* Get type of field. */
}
/* Get bit offset of field. */
- attr = dwarf2_attr (die, DW_AT_data_member_location, cu);
- if (attr)
- {
- int byte_offset = 0;
-
- if (attr_form_is_section_offset (attr))
- dwarf2_complex_location_expr_complaint ();
- else if (attr_form_is_constant (attr))
- byte_offset = dwarf2_get_attr_constant_value (attr, 0);
- else if (attr_form_is_block (attr))
- byte_offset = decode_locdesc (DW_BLOCK (attr), cu);
- else
- dwarf2_complex_location_expr_complaint ();
-
- SET_FIELD_BITPOS (*fp, byte_offset * bits_per_byte);
- }
+ if (handle_data_member_location (die, cu, &offset))
+ SET_FIELD_BITPOS (*fp, offset * bits_per_byte);
attr = dwarf2_attr (die, DW_AT_bit_offset, cu);
if (attr)
{
(so through at least 3.2.1) incorrectly generate
DW_TAG_variable tags. */
- char *physname;
+ const char *physname;
/* Get name of field. */
fieldname = dwarf2_name (die, cu);
}
/* Get physical name. */
- physname = (char *) dwarf2_physname (fieldname, die, cu);
+ physname = dwarf2_physname (fieldname, die, cu);
/* The name is already allocated along with this objfile, so we don't
need to duplicate it for the type. */
}
else if (die->tag == DW_TAG_inheritance)
{
- /* C++ base class field. */
- attr = dwarf2_attr (die, DW_AT_data_member_location, cu);
- if (attr)
- {
- int byte_offset = 0;
-
- if (attr_form_is_section_offset (attr))
- dwarf2_complex_location_expr_complaint ();
- else if (attr_form_is_constant (attr))
- byte_offset = dwarf2_get_attr_constant_value (attr, 0);
- else if (attr_form_is_block (attr))
- byte_offset = decode_locdesc (DW_BLOCK (attr), cu);
- else
- dwarf2_complex_location_expr_complaint ();
+ LONGEST offset;
- SET_FIELD_BITPOS (*fp, byte_offset * bits_per_byte);
- }
+ /* C++ base class field. */
+ if (handle_data_member_location (die, cu, &offset))
+ SET_FIELD_BITPOS (*fp, offset * bits_per_byte);
FIELD_BITSIZE (*fp) = 0;
FIELD_TYPE (*fp) = die_type (die, cu);
FIELD_NAME (*fp) = type_name_no_tag (fp->type);
char *fieldname;
struct nextfnfield *new_fnfield;
struct type *this_type;
+ enum dwarf_access_attribute accessibility;
if (cu->language == language_ada)
error (_("unexpected member function in Ada type"));
}
else
{
- char *physname = (char *) dwarf2_physname (fieldname, die, cu);
+ const char *physname = dwarf2_physname (fieldname, die, cu);
fnp->physname = physname ? physname : "";
}
/* Get accessibility. */
attr = dwarf2_attr (die, DW_AT_accessibility, cu);
if (attr)
+ accessibility = DW_UNSND (attr);
+ else
+ accessibility = dwarf2_default_access_attribute (die, cu);
+ switch (accessibility)
{
- switch (DW_UNSND (attr))
- {
- case DW_ACCESS_private:
- fnp->is_private = 1;
- break;
- case DW_ACCESS_protected:
- fnp->is_protected = 1;
- break;
- }
+ case DW_ACCESS_private:
+ fnp->is_private = 1;
+ break;
+ case DW_ACCESS_protected:
+ fnp->is_protected = 1;
+ break;
}
/* Check for artificial methods. */
}
do_cleanups (back_to);
+
+ if (HAVE_CPLUS_STRUCT (type))
+ TYPE_CPLUS_REALLY_JAVA (type) = cu->language == language_java;
}
quirk_gcc_member_function_pointer (type, cu->objfile);
TYPE_UNSIGNED (this_type) = 1;
}
+ /* If we are reading an enum from a .debug_types unit, and the enum
+ is a declaration, and the enum is not the signatured type in the
+ unit, then we do not want to add a symbol for it. Adding a
+ symbol would in some cases obscure the true definition of the
+ enum, giving users an incomplete type when the definition is
+ actually available. Note that we do not want to do this for all
+ enums which are just declarations, because C++0x allows forward
+ enum declarations. */
+ if (cu->per_cu->debug_type_section
+ && die_is_declaration (die, cu))
+ {
+ struct signatured_type *type_sig;
+
+ type_sig
+ = lookup_signatured_type_at_offset (dwarf2_per_objfile->objfile,
+ cu->per_cu->debug_type_section,
+ cu->per_cu->offset);
+ if (type_sig->type_offset != die->offset)
+ return;
+ }
+
new_symbol (die, this_type, cu);
}
child_die = die->child;
while (child_die && child_die->tag)
{
+ LONGEST offset;
+
sym = new_symbol (child_die, NULL, cu);
- attr = dwarf2_attr (child_die, DW_AT_data_member_location, cu);
- if (sym != NULL && attr != NULL)
+ if (sym != NULL
+ && handle_data_member_location (child_die, cu, &offset))
{
- CORE_ADDR byte_offset = 0;
-
- if (attr_form_is_section_offset (attr))
- dwarf2_complex_location_expr_complaint ();
- else if (attr_form_is_constant (attr))
- byte_offset = dwarf2_get_attr_constant_value (attr, 0);
- else if (attr_form_is_block (attr))
- byte_offset = decode_locdesc (DW_BLOCK (attr), cu);
- else
- dwarf2_complex_location_expr_complaint ();
-
- SYMBOL_VALUE_ADDRESS (sym) = base + byte_offset;
+ SYMBOL_VALUE_ADDRESS (sym) = base + offset;
add_symbol_to_list (sym, &global_symbols);
}
child_die = sibling_die (child_die);
const char *previous_prefix = determine_prefix (die, cu);
cp_add_using_directive (previous_prefix, TYPE_NAME (type), NULL,
- NULL, &objfile->objfile_obstack);
+ NULL, NULL, &objfile->objfile_obstack);
}
}
*is_anonymous = (name == NULL);
if (*is_anonymous)
- name = "(anonymous namespace)";
+ name = CP_ANONYMOUS_NAMESPACE_STR;
return name;
}
break;
case DW_ATE_unsigned:
type_flags |= TYPE_FLAG_UNSIGNED;
+ if (cu->language == language_fortran
+ && name
+ && strncmp (name, "character(", sizeof ("character(") - 1) == 0)
+ code = TYPE_CODE_CHAR;
break;
case DW_ATE_signed_char:
if (cu->language == language_ada || cu->language == language_m2
- || cu->language == language_pascal)
+ || cu->language == language_pascal
+ || cu->language == language_fortran)
code = TYPE_CODE_CHAR;
break;
case DW_ATE_unsigned_char:
if (cu->language == language_ada || cu->language == language_m2
- || cu->language == language_pascal)
+ || cu->language == language_pascal
+ || cu->language == language_fortran)
code = TYPE_CODE_CHAR;
type_flags |= TYPE_FLAG_UNSIGNED;
break;
attr = dwarf2_attr (die, DW_AT_upper_bound, cu);
if (attr)
{
- if (attr->form == DW_FORM_block1 || is_ref_attr (attr))
+ if (attr_form_is_block (attr) || is_ref_attr (attr))
{
/* GCC encodes arrays with unspecified or dynamic length
with a DW_FORM_block1 attribute or a reference attribute.
/* Mark arrays with dynamic length at least as an array of unspecified
length. GDB could check the boundary but before it gets implemented at
least allow accessing the array elements. */
- if (attr && attr->form == DW_FORM_block1)
+ if (attr && attr_form_is_block (attr))
TYPE_HIGH_BOUND_UNDEFINED (range_type) = 1;
/* Ada expects an empty array on no boundary attributes. */
{
fprintf_unfiltered (gdb_stdlog,
"\nRead die from %s of %s:\n",
- reader->buffer == dwarf2_per_objfile->info.buffer
- ? ".debug_info"
- : reader->buffer == dwarf2_per_objfile->types.buffer
- ? ".debug_types"
- : "unknown section",
+ (reader->cu->per_cu->debug_type_section
+ ? ".debug_types"
+ : ".debug_info"),
reader->abfd->filename);
dump_die (result, dwarf2_die_debug);
}
if (parent_die == NULL
&& part_die->has_specification == 0
&& part_die->is_declaration == 0
- && (part_die->tag == DW_TAG_typedef
+ && ((part_die->tag == DW_TAG_typedef && !part_die->has_children)
|| part_die->tag == DW_TAG_base_type
|| part_die->tag == DW_TAG_subrange_type))
{
continue;
}
+ /* The exception for DW_TAG_typedef with has_children above is
+ a workaround of GCC PR debug/47510. In the case of this complaint
+ type_name_no_tag_or_error will error on such types later.
+
+ GDB skipped children of DW_TAG_typedef by the shortcut above and then
+ it could not find the child DIEs referenced later, this is checked
+ above. In correct DWARF DW_TAG_typedef should have no children. */
+
+ if (part_die->tag == DW_TAG_typedef && part_die->has_children)
+ complaint (&symfile_complaints,
+ _("DW_TAG_typedef has childen - GCC PR debug/47510 bug "
+ "- DIE at 0x%x [in module %s]"),
+ part_die->offset, cu->objfile->name);
+
/* If we're at the second level, and we're an enumerator, and
our parent has no specification (meaning possibly lives in a
namespace elsewhere), then we can add the partial symbol now
}
}
- /* When using the GNU linker, .gnu.linkonce. sections are used to
- eliminate duplicate copies of functions and vtables and such.
- The linker will arbitrarily choose one and discard the others.
- The AT_*_pc values for such functions refer to local labels in
- these sections. If the section from that file was discarded, the
- labels are not in the output, so the relocs get a value of 0.
- If this is a discarded function, mark the pc bounds as invalid,
- so that GDB will ignore it. */
- if (has_low_pc_attr && has_high_pc_attr
- && part_die->lowpc < part_die->highpc
- && (part_die->lowpc != 0
- || dwarf2_per_objfile->has_section_at_zero))
- part_die->has_pc_info = 1;
+ if (has_low_pc_attr && has_high_pc_attr)
+ {
+ /* When using the GNU linker, .gnu.linkonce. sections are used to
+ eliminate duplicate copies of functions and vtables and such.
+ The linker will arbitrarily choose one and discard the others.
+ The AT_*_pc values for such functions refer to local labels in
+ these sections. If the section from that file was discarded, the
+ labels are not in the output, so the relocs get a value of 0.
+ If this is a discarded function, mark the pc bounds as invalid,
+ so that GDB will ignore it. */
+ if (part_die->lowpc == 0 && !dwarf2_per_objfile->has_section_at_zero)
+ {
+ struct gdbarch *gdbarch = get_objfile_arch (cu->objfile);
+
+ complaint (&symfile_complaints,
+ _("DW_AT_low_pc %s is zero "
+ "for DIE at 0x%x [in module %s]"),
+ paddress (gdbarch, part_die->lowpc),
+ part_die->offset, cu->objfile->name);
+ }
+ /* dwarf2_get_pc_bounds has also the strict low < high requirement. */
+ else if (part_die->lowpc >= part_die->highpc)
+ {
+ struct gdbarch *gdbarch = get_objfile_arch (cu->objfile);
+
+ complaint (&symfile_complaints,
+ _("DW_AT_low_pc %s is not < DW_AT_high_pc %s "
+ "for DIE at 0x%x [in module %s]"),
+ paddress (gdbarch, part_die->lowpc),
+ paddress (gdbarch, part_die->highpc),
+ part_die->offset, cu->objfile->name);
+ }
+ else
+ part_die->has_pc_info = 1;
+ }
return info_ptr;
}
/* Find a partial DIE at OFFSET, which may or may not be in CU,
except in the case of .debug_types DIEs which do not reference
outside their CU (they do however referencing other types via
- DW_FORM_sig8). */
+ DW_FORM_ref_sig8). */
static struct partial_die_info *
find_partial_die (unsigned int offset, struct dwarf2_cu *cu)
struct dwarf2_per_cu_data *per_cu = NULL;
struct partial_die_info *pd = NULL;
- if (cu->per_cu->from_debug_types)
+ if (cu->per_cu->debug_type_section)
{
pd = find_partial_die_in_comp_unit (offset, cu);
if (pd != NULL)
/* Set default names for some unnamed DIEs. */
if (part_die->name == NULL && part_die->tag == DW_TAG_namespace)
- part_die->name = "(anonymous namespace)";
+ part_die->name = CP_ANONYMOUS_NAMESPACE_STR;
/* If there is no parent die to provide a namespace, and there are
children, see if we can determine the namespace from their linkage
NOTE: We need to do this even if cu->has_namespace_info != 0.
gcc-4.5 -gdwarf-4 can drop the enclosing namespace. */
if (cu->language == language_cplus
- && dwarf2_per_objfile->types.asection != NULL
+ && !VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types)
&& part_die->die_parent == NULL
&& part_die->has_children
&& (part_die->tag == DW_TAG_class_type
|| part_die->tag == DW_TAG_union_type))
guess_partial_die_structure_name (part_die, cu);
+ /* GCC might emit a nameless struct or union that has a linkage
+ name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */
+ if (part_die->name == NULL
+ && (part_die->tag == DW_TAG_structure_type
+ || part_die->tag == DW_TAG_union_type
+ || part_die->tag == DW_TAG_class_type)
+ && part_die->linkage_name != NULL)
+ {
+ char *demangled;
+
+ demangled = cplus_demangle (part_die->linkage_name, DMGL_TYPES);
+ if (demangled)
+ {
+ part_die->name = obsavestring (demangled, strlen (demangled),
+ &cu->objfile->objfile_obstack);
+ xfree (demangled);
+ }
+ }
+
part_die->fixup_called = 1;
}
DW_ADDR (attr) = cu->header.offset + read_8_bytes (abfd, info_ptr);
info_ptr += 8;
break;
- case DW_FORM_sig8:
+ case DW_FORM_ref_sig8:
/* Convert the signature to something we can record in DW_UNSND
for later lookup.
NOTE: This is NULL if the type wasn't found. */
return bfd_get_16 (abfd, buf);
}
-static int
-read_2_signed_bytes (bfd *abfd, gdb_byte *buf)
-{
- return bfd_get_signed_16 (abfd, buf);
-}
-
static unsigned int
read_4_bytes (bfd *abfd, gdb_byte *buf)
{
return bfd_get_32 (abfd, buf);
}
-static int
-read_4_signed_bytes (bfd *abfd, gdb_byte *buf)
-{
- return bfd_get_signed_32 (abfd, buf);
-}
-
static ULONGEST
read_8_bytes (bfd *abfd, gdb_byte *buf)
{
}
static char *
-read_indirect_string (bfd *abfd, gdb_byte *buf,
- const struct comp_unit_head *cu_header,
- unsigned int *bytes_read_ptr)
+read_indirect_string_at_offset (bfd *abfd, LONGEST str_offset)
{
- LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr);
-
dwarf2_read_section (dwarf2_per_objfile->objfile, &dwarf2_per_objfile->str);
if (dwarf2_per_objfile->str.buffer == NULL)
- {
- error (_("DW_FORM_strp used without .debug_str section [in module %s]"),
- bfd_get_filename (abfd));
- return NULL;
- }
+ error (_("DW_FORM_strp used without .debug_str section [in module %s]"),
+ bfd_get_filename (abfd));
if (str_offset >= dwarf2_per_objfile->str.size)
- {
- error (_("DW_FORM_strp pointing outside of "
- ".debug_str section [in module %s]"),
- bfd_get_filename (abfd));
- return NULL;
- }
+ error (_("DW_FORM_strp pointing outside of "
+ ".debug_str section [in module %s]"),
+ bfd_get_filename (abfd));
gdb_assert (HOST_CHAR_BIT == 8);
if (dwarf2_per_objfile->str.buffer[str_offset] == '\0')
return NULL;
return (char *) (dwarf2_per_objfile->str.buffer + str_offset);
}
+static char *
+read_indirect_string (bfd *abfd, gdb_byte *buf,
+ const struct comp_unit_head *cu_header,
+ unsigned int *bytes_read_ptr)
+{
+ LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr);
+
+ return read_indirect_string_at_offset (abfd, str_offset);
+}
+
static unsigned long
read_unsigned_leb128 (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr)
{
return include_name;
}
+/* Ignore this record_line request. */
+
+static void
+noop_record_line (struct subfile *subfile, int line, CORE_ADDR pc)
+{
+ return;
+}
+
/* Decode the Line Number Program (LNP) for the given line_header
structure and CU. The actual information extracted and the type
of structures created from the LNP depends on the value of PST.
struct gdbarch *gdbarch = get_objfile_arch (objfile);
const int decode_for_pst_p = (pst != NULL);
struct subfile *last_subfile = NULL, *first_subfile = current_subfile;
+ void (*p_record_line) (struct subfile *subfile, int line, CORE_ADDR pc)
+ = record_line;
baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
{
addr = gdbarch_addr_bits_remove (gdbarch, address);
if (last_subfile)
- record_line (last_subfile, 0, addr);
+ (*p_record_line) (last_subfile, 0, addr);
last_subfile = current_subfile;
}
/* Append row to matrix using current values. */
addr = check_cu_functions (address, cu);
addr = gdbarch_addr_bits_remove (gdbarch, addr);
- record_line (current_subfile, line, addr);
+ (*p_record_line) (current_subfile, line, addr);
}
}
basic_block = 0;
switch (extended_op)
{
case DW_LNE_end_sequence:
+ p_record_line = record_line;
end_sequence = 1;
break;
case DW_LNE_set_address:
address = read_address (abfd, line_ptr, cu, &bytes_read);
+
+ if (address == 0 && !dwarf2_per_objfile->has_section_at_zero)
+ {
+ /* This line table is for a function which has been
+ GCd by the linker. Ignore it. PR gdb/12528 */
+
+ long line_offset
+ = line_ptr - dwarf2_per_objfile->line.buffer;
+
+ complaint (&symfile_complaints,
+ _(".debug_line address at offset 0x%lx is 0 "
+ "[in module %s]"),
+ line_offset, cu->objfile->name);
+ p_record_line = noop_record_line;
+ }
+
op_index = 0;
line_ptr += bytes_read;
address += baseaddr;
{
addr = gdbarch_addr_bits_remove (gdbarch, address);
if (last_subfile)
- record_line (last_subfile, 0, addr);
+ (*p_record_line) (last_subfile, 0, addr);
last_subfile = current_subfile;
}
addr = check_cu_functions (address, cu);
addr = gdbarch_addr_bits_remove (gdbarch, addr);
- record_line (current_subfile, line, addr);
+ (*p_record_line) (current_subfile, line, addr);
}
}
basic_block = 0;
if (!decode_for_pst_p)
{
addr = gdbarch_addr_bits_remove (gdbarch, address);
- record_line (current_subfile, 0, addr);
+ (*p_record_line) (current_subfile, 0, addr);
}
}
}
dwarf2_symbol_mark_computed (attr, sym, cu);
SYMBOL_CLASS (sym) = LOC_COMPUTED;
+
+ if (SYMBOL_COMPUTED_OPS (sym) == &dwarf2_loclist_funcs)
+ cu->has_loclist = 1;
}
/* Given a pointer to a DWARF information entry, figure out if we need
{
dwarf2_const_value (attr, sym, cu);
}
- attr = dwarf2_attr (die, DW_AT_variable_parameter, cu);
- if (attr && DW_UNSND (attr))
- {
- struct type *ref_type;
-
- ref_type = lookup_reference_type (SYMBOL_TYPE (sym));
- SYMBOL_TYPE (sym) = ref_type;
- }
list_to_add = cu->list_in_scope;
break;
this_type = get_die_type_at_offset (offset, cu->per_cu);
}
- else if (attr->form == DW_FORM_sig8)
+ else if (attr->form == DW_FORM_ref_sig8)
{
struct signatured_type *sig_type = DW_SIGNATURED_TYPE (attr);
struct dwarf2_cu *sig_cu;
"at 0x%x [in module %s]"),
die->offset, cu->objfile->name);
- gdb_assert (sig_type->per_cu.from_debug_types);
- offset = sig_type->offset + sig_type->type_offset;
+ gdb_assert (sig_type->per_cu.debug_type_section);
+ offset = sig_type->per_cu.offset + sig_type->type_offset;
this_type = get_die_type_at_offset (offset, &sig_type->per_cu);
}
else
case DW_TAG_compile_unit:
/* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */
if (cu->language == language_cplus
- && dwarf2_per_objfile->types.asection != NULL
+ && !VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types)
&& die->child != NULL
&& (die->tag == DW_TAG_class_type
|| die->tag == DW_TAG_structure_type
struct attribute *attr;
attr = dwarf2_attr (die, DW_AT_name, cu);
- if (!attr || !DW_STRING (attr))
+ if ((!attr || !DW_STRING (attr))
+ && die->tag != DW_TAG_class_type
+ && die->tag != DW_TAG_interface_type
+ && die->tag != DW_TAG_structure_type
+ && die->tag != DW_TAG_union_type)
return NULL;
switch (die->tag)
structures or unions. These were of the form "._%d" in GCC 4.1,
or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3
and GCC 4.4. We work around this problem by ignoring these. */
- if (strncmp (DW_STRING (attr), "._", 2) == 0
- || strncmp (DW_STRING (attr), "<anonymous", 10) == 0)
+ if (attr && DW_STRING (attr)
+ && (strncmp (DW_STRING (attr), "._", 2) == 0
+ || strncmp (DW_STRING (attr), "<anonymous", 10) == 0))
return NULL;
+
+ /* GCC might emit a nameless typedef that has a linkage name. See
+ http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */
+ if (!attr || DW_STRING (attr) == NULL)
+ {
+ char *demangled = NULL;
+
+ attr = dwarf2_attr (die, DW_AT_linkage_name, cu);
+ if (attr == NULL)
+ attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu);
+
+ if (attr == NULL || DW_STRING (attr) == NULL)
+ return NULL;
+
+ /* Avoid demangling DW_STRING (attr) the second time on a second
+ call for the same DIE. */
+ if (!DW_STRING_IS_CANONICAL (attr))
+ demangled = cplus_demangle (DW_STRING (attr), DMGL_TYPES);
+
+ if (demangled)
+ {
+ /* FIXME: we already did this for the partial symbol... */
+ DW_STRING (attr)
+ = obsavestring (demangled, strlen (demangled),
+ &cu->objfile->objfile_obstack);
+ DW_STRING_IS_CANONICAL (attr) = 1;
+ xfree (demangled);
+ }
+ }
break;
default:
return "DW_FORM_exprloc";
case DW_FORM_flag_present:
return "DW_FORM_flag_present";
- case DW_FORM_sig8:
- return "DW_FORM_sig8";
+ case DW_FORM_ref_sig8:
+ return "DW_FORM_ref_sig8";
default:
return "DW_FORM_<unknown>";
}
return "DW_OP_GNU_uninit";
case DW_OP_GNU_implicit_pointer:
return "DW_OP_GNU_implicit_pointer";
+ case DW_OP_GNU_entry_value:
+ return "DW_OP_GNU_entry_value";
+ case DW_OP_GNU_const_type:
+ return "DW_OP_GNU_const_type";
+ case DW_OP_GNU_regval_type:
+ return "DW_OP_GNU_regval_type";
+ case DW_OP_GNU_deref_type:
+ return "DW_OP_GNU_deref_type";
+ case DW_OP_GNU_convert:
+ return "DW_OP_GNU_convert";
+ case DW_OP_GNU_reinterpret:
+ return "DW_OP_GNU_reinterpret";
default:
return NULL;
}
fprintf_unfiltered (f, "section offset: %s",
pulongest (DW_UNSND (&die->attrs[i])));
break;
- case DW_FORM_sig8:
+ case DW_FORM_ref_sig8:
if (DW_SIGNATURED_TYPE (&die->attrs[i]) != NULL)
fprintf_unfiltered (f, "signatured type, offset: 0x%x",
- DW_SIGNATURED_TYPE (&die->attrs[i])->offset);
+ DW_SIGNATURED_TYPE (&die->attrs[i])->per_cu.offset);
else
fprintf_unfiltered (f, "signatured type, offset: unknown");
break;
if (is_ref_attr (attr))
die = follow_die_ref (src_die, attr, ref_cu);
- else if (attr->form == DW_FORM_sig8)
+ else if (attr->form == DW_FORM_ref_sig8)
die = follow_die_sig (src_die, attr, ref_cu);
else
{
target_cu = cu;
- if (cu->per_cu->from_debug_types)
+ if (cu->per_cu->debug_type_section)
{
/* .debug_types CUs cannot reference anything outside their CU.
If they need to, they have to reference a signatured type via
- DW_FORM_sig8. */
+ DW_FORM_ref_sig8. */
if (! offset_in_cu_p (&cu->header, offset))
return NULL;
}
return die;
}
-/* Return DWARF block and its CU referenced by OFFSET at PER_CU. Returned
- value is intended for DW_OP_call*. */
+/* Return DWARF block referenced by DW_AT_location of DIE at OFFSET at PER_CU.
+ Returned value is intended for DW_OP_call*. Returned
+ dwarf2_locexpr_baton->data has lifetime of PER_CU->OBJFILE. */
struct dwarf2_locexpr_baton
dwarf2_fetch_die_location_block (unsigned int offset,
CORE_ADDR (*get_frame_pc) (void *baton),
void *baton)
{
- struct dwarf2_cu *cu = per_cu->cu;
+ struct dwarf2_cu *cu;
struct die_info *die;
struct attribute *attr;
struct dwarf2_locexpr_baton retval;
dw2_setup (per_cu->objfile);
+ if (per_cu->cu == NULL)
+ load_cu (per_cu);
+ cu = per_cu->cu;
+
die = follow_die_offset (offset, &cu);
if (!die)
error (_("Dwarf Error: Cannot find DIE at 0x%x referenced in module %s"),
retval.size = DW_BLOCK (attr)->size;
}
retval.per_cu = cu->per_cu;
+
+ age_cached_comp_units ();
+
return retval;
}
+/* Return the type of the DIE at DIE_OFFSET in the CU named by
+ PER_CU. */
+
+struct type *
+dwarf2_get_die_type (unsigned int die_offset,
+ struct dwarf2_per_cu_data *per_cu)
+{
+ dw2_setup (per_cu->objfile);
+ return get_die_type_at_offset (die_offset, per_cu);
+}
+
/* Follow the signature attribute ATTR in SRC_DIE.
On entry *REF_CU is the CU of SRC_DIE.
On exit *REF_CU is the CU of the result. */
/* Given an offset of a signatured type, return its signatured_type. */
static struct signatured_type *
-lookup_signatured_type_at_offset (struct objfile *objfile, unsigned int offset)
+lookup_signatured_type_at_offset (struct objfile *objfile,
+ struct dwarf2_section_info *section,
+ unsigned int offset)
{
- gdb_byte *info_ptr = dwarf2_per_objfile->types.buffer + offset;
+ gdb_byte *info_ptr = section->buffer + offset;
unsigned int length, initial_length_size;
unsigned int sig_offset;
struct signatured_type find_entry, *type_sig;
/* This is only used to lookup previously recorded types.
If we didn't find it, it's our bug. */
gdb_assert (type_sig != NULL);
- gdb_assert (offset == type_sig->offset);
+ gdb_assert (offset == type_sig->per_cu.offset);
return type_sig;
}
static void
read_signatured_type_at_offset (struct objfile *objfile,
+ struct dwarf2_section_info *sect,
unsigned int offset)
{
struct signatured_type *type_sig;
- dwarf2_read_section (objfile, &dwarf2_per_objfile->types);
+ dwarf2_read_section (objfile, sect);
/* We have the section offset, but we need the signature to do the
hash table lookup. */
- type_sig = lookup_signatured_type_at_offset (objfile, offset);
+ type_sig = lookup_signatured_type_at_offset (objfile, sect, offset);
gdb_assert (type_sig->per_cu.cu == NULL);
struct dwarf2_cu *cu;
ULONGEST signature;
struct cleanup *back_to, *free_cu_cleanup;
+ struct dwarf2_section_info *section = type_sig->per_cu.debug_type_section;
- dwarf2_read_section (objfile, &dwarf2_per_objfile->types);
- types_ptr = dwarf2_per_objfile->types.buffer + type_sig->offset;
+ dwarf2_read_section (objfile, section);
+ types_ptr = section->buffer + type_sig->per_cu.offset;
gdb_assert (type_sig->per_cu.cu == NULL);
/* If an error occurs while loading, release our storage. */
free_cu_cleanup = make_cleanup (free_one_comp_unit, cu);
- types_ptr = read_type_comp_unit_head (&cu->header, &signature,
+ types_ptr = read_type_comp_unit_head (&cu->header, section, &signature,
types_ptr, objfile->obfd);
gdb_assert (signature == type_sig->signature);
dwarf2_per_objfile->read_in_chain = &type_sig->per_cu;
}
+/* Workaround as dwarf_expr_context_funcs.read_mem implementation before
+ a proper runtime DWARF expressions evaluator gets implemented.
+ Otherwise gnuv3_baseclass_offset would error by:
+ Expected a negative vbase offset (old compiler?) */
+
+static void
+decode_locdesc_read_mem (void *baton, gdb_byte *buf, CORE_ADDR addr,
+ size_t length)
+{
+ struct dwarf_expr_context *ctx = baton;
+ struct gdbarch *gdbarch = ctx->gdbarch;
+ struct type *ptr_type = builtin_type (gdbarch)->builtin_data_ptr;
+
+ memset (buf, 0, length);
+
+ if (TYPE_LENGTH (ptr_type) == length)
+ store_typed_address (buf, ptr_type, addr);
+}
+
+static const struct dwarf_expr_context_funcs decode_locdesc_ctx_funcs =
+{
+ ctx_no_read_reg,
+ decode_locdesc_read_mem,
+ ctx_no_get_frame_base,
+ ctx_no_get_frame_cfa,
+ ctx_no_get_frame_pc,
+ ctx_no_get_tls_address,
+ ctx_no_dwarf_call,
+ ctx_no_get_base_type
+};
+
/* Decode simple location descriptions.
Given a pointer to a dwarf block that defines a location, compute
the location and return the value.
object is optimized out. The return value is 0 for that case.
FIXME drow/2003-11-16: No callers check for this case any more; soon all
callers will only want a very basic result and this can become a
- complaint.
-
- Note that stack[0] is unused except as a default error return. */
+ complaint. */
static CORE_ADDR
decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu)
{
struct objfile *objfile = cu->objfile;
- int i;
- int size = blk->size;
- gdb_byte *data = blk->data;
- CORE_ADDR stack[64];
- int stacki;
- unsigned int bytes_read, unsnd;
- gdb_byte op;
-
- i = 0;
- stacki = 0;
- stack[stacki] = 0;
- stack[++stacki] = 0;
-
- while (i < size)
- {
- op = data[i++];
- switch (op)
- {
- case DW_OP_lit0:
- case DW_OP_lit1:
- case DW_OP_lit2:
- case DW_OP_lit3:
- case DW_OP_lit4:
- case DW_OP_lit5:
- case DW_OP_lit6:
- case DW_OP_lit7:
- case DW_OP_lit8:
- case DW_OP_lit9:
- case DW_OP_lit10:
- case DW_OP_lit11:
- case DW_OP_lit12:
- case DW_OP_lit13:
- case DW_OP_lit14:
- case DW_OP_lit15:
- case DW_OP_lit16:
- case DW_OP_lit17:
- case DW_OP_lit18:
- case DW_OP_lit19:
- case DW_OP_lit20:
- case DW_OP_lit21:
- case DW_OP_lit22:
- case DW_OP_lit23:
- case DW_OP_lit24:
- case DW_OP_lit25:
- case DW_OP_lit26:
- case DW_OP_lit27:
- case DW_OP_lit28:
- case DW_OP_lit29:
- case DW_OP_lit30:
- case DW_OP_lit31:
- stack[++stacki] = op - DW_OP_lit0;
- break;
+ struct dwarf_expr_context *ctx;
+ struct cleanup *old_chain;
+ volatile struct gdb_exception ex;
- case DW_OP_reg0:
- case DW_OP_reg1:
- case DW_OP_reg2:
- case DW_OP_reg3:
- case DW_OP_reg4:
- case DW_OP_reg5:
- case DW_OP_reg6:
- case DW_OP_reg7:
- case DW_OP_reg8:
- case DW_OP_reg9:
- case DW_OP_reg10:
- case DW_OP_reg11:
- case DW_OP_reg12:
- case DW_OP_reg13:
- case DW_OP_reg14:
- case DW_OP_reg15:
- case DW_OP_reg16:
- case DW_OP_reg17:
- case DW_OP_reg18:
- case DW_OP_reg19:
- case DW_OP_reg20:
- case DW_OP_reg21:
- case DW_OP_reg22:
- case DW_OP_reg23:
- case DW_OP_reg24:
- case DW_OP_reg25:
- case DW_OP_reg26:
- case DW_OP_reg27:
- case DW_OP_reg28:
- case DW_OP_reg29:
- case DW_OP_reg30:
- case DW_OP_reg31:
- stack[++stacki] = op - DW_OP_reg0;
- if (i < size)
- dwarf2_complex_location_expr_complaint ();
- break;
+ ctx = new_dwarf_expr_context ();
+ old_chain = make_cleanup_free_dwarf_expr_context (ctx);
+ make_cleanup_value_free_to_mark (value_mark ());
- case DW_OP_regx:
- unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read);
- i += bytes_read;
- stack[++stacki] = unsnd;
- if (i < size)
- dwarf2_complex_location_expr_complaint ();
- break;
+ ctx->gdbarch = get_objfile_arch (objfile);
+ ctx->addr_size = cu->header.addr_size;
+ ctx->offset = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
+ ctx->baton = ctx;
+ ctx->funcs = &decode_locdesc_ctx_funcs;
- case DW_OP_addr:
- stack[++stacki] = read_address (objfile->obfd, &data[i],
- cu, &bytes_read);
- i += bytes_read;
- break;
+ /* DW_AT_data_member_location expects the structure address to be pushed on
+ the stack. Simulate the offset by address 0. */
+ dwarf_expr_push_address (ctx, 0, 0);
- case DW_OP_const1u:
- stack[++stacki] = read_1_byte (objfile->obfd, &data[i]);
- i += 1;
- break;
+ TRY_CATCH (ex, RETURN_MASK_ERROR)
+ {
+ dwarf_expr_eval (ctx, blk->data, blk->size);
+ }
+ if (ex.reason < 0)
+ {
+ if (ex.message)
+ complaint (&symfile_complaints, "%s", ex.message);
+ }
+ else if (ctx->num_pieces == 0)
+ switch (ctx->location)
+ {
+ /* The returned number will be bogus, just do not complain for locations
+ in global registers - it is here only a partial symbol address. */
+ case DWARF_VALUE_REGISTER:
- case DW_OP_const1s:
- stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]);
- i += 1;
- break;
+ case DWARF_VALUE_MEMORY:
+ case DWARF_VALUE_STACK:
+ {
+ CORE_ADDR address = dwarf_expr_fetch_address (ctx, 0);
- case DW_OP_const2u:
- stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]);
- i += 2;
- break;
+ do_cleanups (old_chain);
+ return address;
+ }
+ }
- case DW_OP_const2s:
- stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]);
- i += 2;
- break;
+ do_cleanups (old_chain);
+ dwarf2_complex_location_expr_complaint ();
+ return 0;
+}
- case DW_OP_const4u:
- stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]);
- i += 4;
- break;
+/* memory allocation interface */
- case DW_OP_const4s:
- stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]);
- i += 4;
- break;
+static struct dwarf_block *
+dwarf_alloc_block (struct dwarf2_cu *cu)
+{
+ struct dwarf_block *blk;
- case DW_OP_constu:
- stack[++stacki] = read_unsigned_leb128 (NULL, (data + i),
- &bytes_read);
- i += bytes_read;
- break;
+ blk = (struct dwarf_block *)
+ obstack_alloc (&cu->comp_unit_obstack, sizeof (struct dwarf_block));
+ return (blk);
+}
- case DW_OP_consts:
- stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read);
- i += bytes_read;
- break;
+static struct abbrev_info *
+dwarf_alloc_abbrev (struct dwarf2_cu *cu)
+{
+ struct abbrev_info *abbrev;
- case DW_OP_dup:
- stack[stacki + 1] = stack[stacki];
- stacki++;
- break;
-
- case DW_OP_plus:
- stack[stacki - 1] += stack[stacki];
- stacki--;
- break;
-
- case DW_OP_plus_uconst:
- stack[stacki] += read_unsigned_leb128 (NULL, (data + i),
- &bytes_read);
- i += bytes_read;
- break;
-
- case DW_OP_minus:
- stack[stacki - 1] -= stack[stacki];
- stacki--;
- break;
-
- case DW_OP_deref:
- /* If we're not the last op, then we definitely can't encode
- this using GDB's address_class enum. This is valid for partial
- global symbols, although the variable's address will be bogus
- in the psymtab. */
- if (i < size)
- dwarf2_complex_location_expr_complaint ();
- break;
-
- case DW_OP_GNU_push_tls_address:
- /* The top of the stack has the offset from the beginning
- of the thread control block at which the variable is located. */
- /* Nothing should follow this operator, so the top of stack would
- be returned. */
- /* This is valid for partial global symbols, but the variable's
- address will be bogus in the psymtab. */
- if (i < size)
- dwarf2_complex_location_expr_complaint ();
- break;
-
- case DW_OP_GNU_uninit:
- break;
-
- default:
- {
- const char *name = dwarf_stack_op_name (op);
-
- if (name)
- complaint (&symfile_complaints, _("unsupported stack op: '%s'"),
- name);
- else
- complaint (&symfile_complaints, _("unsupported stack op: '%02x'"),
- op);
- }
-
- return (stack[stacki]);
- }
-
- /* Enforce maximum stack depth of SIZE-1 to avoid writing
- outside of the allocated space. Also enforce minimum>0. */
- if (stacki >= ARRAY_SIZE (stack) - 1)
- {
- complaint (&symfile_complaints,
- _("location description stack overflow"));
- return 0;
- }
-
- if (stacki <= 0)
- {
- complaint (&symfile_complaints,
- _("location description stack underflow"));
- return 0;
- }
- }
- return (stack[stacki]);
-}
-
-/* memory allocation interface */
-
-static struct dwarf_block *
-dwarf_alloc_block (struct dwarf2_cu *cu)
-{
- struct dwarf_block *blk;
-
- blk = (struct dwarf_block *)
- obstack_alloc (&cu->comp_unit_obstack, sizeof (struct dwarf_block));
- return (blk);
-}
-
-static struct abbrev_info *
-dwarf_alloc_abbrev (struct dwarf2_cu *cu)
-{
- struct abbrev_info *abbrev;
-
- abbrev = (struct abbrev_info *)
- obstack_alloc (&cu->abbrev_obstack, sizeof (struct abbrev_info));
- memset (abbrev, 0, sizeof (struct abbrev_info));
- return (abbrev);
-}
+ abbrev = (struct abbrev_info *)
+ obstack_alloc (&cu->abbrev_obstack, sizeof (struct abbrev_info));
+ memset (abbrev, 0, sizeof (struct abbrev_info));
+ return (abbrev);
+}
static struct die_info *
dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs)
dwarf2_macro_malformed_definition_complaint (body);
}
+/* Skip some bytes from BYTES according to the form given in FORM.
+ Returns the new pointer. */
-static void
-dwarf_decode_macros (struct line_header *lh, unsigned int offset,
- char *comp_dir, bfd *abfd,
- struct dwarf2_cu *cu)
+static gdb_byte *
+skip_form_bytes (bfd *abfd, gdb_byte *bytes,
+ enum dwarf_form form,
+ unsigned int offset_size,
+ struct dwarf2_section_info *section)
{
- gdb_byte *mac_ptr, *mac_end;
- struct macro_source_file *current_file = 0;
- enum dwarf_macinfo_record_type macinfo_type;
- int at_commandline;
+ unsigned int bytes_read;
- dwarf2_read_section (dwarf2_per_objfile->objfile,
- &dwarf2_per_objfile->macinfo);
- if (dwarf2_per_objfile->macinfo.buffer == NULL)
+ switch (form)
{
- complaint (&symfile_complaints, _("missing .debug_macinfo section"));
- return;
+ case DW_FORM_data1:
+ case DW_FORM_flag:
+ ++bytes;
+ break;
+
+ case DW_FORM_data2:
+ bytes += 2;
+ break;
+
+ case DW_FORM_data4:
+ bytes += 4;
+ break;
+
+ case DW_FORM_data8:
+ bytes += 8;
+ break;
+
+ case DW_FORM_string:
+ read_direct_string (abfd, bytes, &bytes_read);
+ bytes += bytes_read;
+ break;
+
+ case DW_FORM_sec_offset:
+ case DW_FORM_strp:
+ bytes += offset_size;
+ break;
+
+ case DW_FORM_block:
+ bytes += read_unsigned_leb128 (abfd, bytes, &bytes_read);
+ bytes += bytes_read;
+ break;
+
+ case DW_FORM_block1:
+ bytes += 1 + read_1_byte (abfd, bytes);
+ break;
+ case DW_FORM_block2:
+ bytes += 2 + read_2_bytes (abfd, bytes);
+ break;
+ case DW_FORM_block4:
+ bytes += 4 + read_4_bytes (abfd, bytes);
+ break;
+
+ case DW_FORM_sdata:
+ case DW_FORM_udata:
+ bytes = skip_leb128 (abfd, bytes);
+ break;
+
+ default:
+ {
+ complain:
+ complaint (&symfile_complaints,
+ _("invalid form 0x%x in `%s'"),
+ form,
+ section->asection->name);
+ return NULL;
+ }
}
- /* First pass: Find the name of the base filename.
- This filename is needed in order to process all macros whose definition
- (or undefinition) comes from the command line. These macros are defined
- before the first DW_MACINFO_start_file entry, and yet still need to be
- associated to the base file.
+ return bytes;
+}
- To determine the base file name, we scan the macro definitions until we
- reach the first DW_MACINFO_start_file entry. We then initialize
- CURRENT_FILE accordingly so that any macro definition found before the
- first DW_MACINFO_start_file can still be associated to the base file. */
+/* A helper for dwarf_decode_macros that handles skipping an unknown
+ opcode. Returns an updated pointer to the macro data buffer; or,
+ on error, issues a complaint and returns NULL. */
- mac_ptr = dwarf2_per_objfile->macinfo.buffer + offset;
- mac_end = dwarf2_per_objfile->macinfo.buffer
- + dwarf2_per_objfile->macinfo.size;
+static gdb_byte *
+skip_unknown_opcode (unsigned int opcode,
+ gdb_byte **opcode_definitions,
+ gdb_byte *mac_ptr,
+ bfd *abfd,
+ unsigned int offset_size,
+ struct dwarf2_section_info *section)
+{
+ unsigned int bytes_read, i;
+ unsigned long arg;
+ gdb_byte *defn;
- do
+ if (opcode_definitions[opcode] == NULL)
{
- /* Do we at least have room for a macinfo type byte? */
- if (mac_ptr >= mac_end)
- {
- /* Complaint is printed during the second pass as GDB will probably
- stop the first pass earlier upon finding
- DW_MACINFO_start_file. */
- break;
- }
+ complaint (&symfile_complaints,
+ _("unrecognized DW_MACFINO opcode 0x%x"),
+ opcode);
+ return NULL;
+ }
- macinfo_type = read_1_byte (abfd, mac_ptr);
- mac_ptr++;
+ defn = opcode_definitions[opcode];
+ arg = read_unsigned_leb128 (abfd, defn, &bytes_read);
+ defn += bytes_read;
- switch (macinfo_type)
- {
- /* A zero macinfo type indicates the end of the macro
- information. */
- case 0:
- break;
+ for (i = 0; i < arg; ++i)
+ {
+ mac_ptr = skip_form_bytes (abfd, mac_ptr, defn[i], offset_size, section);
+ if (mac_ptr == NULL)
+ {
+ /* skip_form_bytes already issued the complaint. */
+ return NULL;
+ }
+ }
- case DW_MACINFO_define:
- case DW_MACINFO_undef:
- /* Only skip the data by MAC_PTR. */
- {
- unsigned int bytes_read;
+ return mac_ptr;
+}
- read_unsigned_leb128 (abfd, mac_ptr, &bytes_read);
- mac_ptr += bytes_read;
- read_direct_string (abfd, mac_ptr, &bytes_read);
- mac_ptr += bytes_read;
- }
- break;
+/* A helper function which parses the header of a macro section.
+ If the macro section is the extended (for now called "GNU") type,
+ then this updates *OFFSET_SIZE. Returns a pointer to just after
+ the header, or issues a complaint and returns NULL on error. */
- case DW_MACINFO_start_file:
- {
- unsigned int bytes_read;
- int line, file;
+static gdb_byte *
+dwarf_parse_macro_header (gdb_byte **opcode_definitions,
+ bfd *abfd,
+ gdb_byte *mac_ptr,
+ unsigned int *offset_size,
+ int section_is_gnu)
+{
+ memset (opcode_definitions, 0, 256 * sizeof (gdb_byte *));
- line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read);
- mac_ptr += bytes_read;
- file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read);
- mac_ptr += bytes_read;
+ if (section_is_gnu)
+ {
+ unsigned int version, flags;
- current_file = macro_start_file (file, line, current_file,
- comp_dir, lh, cu->objfile);
- }
- break;
+ version = read_2_bytes (abfd, mac_ptr);
+ if (version != 4)
+ {
+ complaint (&symfile_complaints,
+ _("unrecognized version `%d' in .debug_macro section"),
+ version);
+ return NULL;
+ }
+ mac_ptr += 2;
- case DW_MACINFO_end_file:
- /* No data to skip by MAC_PTR. */
- break;
+ flags = read_1_byte (abfd, mac_ptr);
+ ++mac_ptr;
+ *offset_size = (flags & 1) ? 8 : 4;
- case DW_MACINFO_vendor_ext:
- /* Only skip the data by MAC_PTR. */
- {
- unsigned int bytes_read;
+ if ((flags & 2) != 0)
+ /* We don't need the line table offset. */
+ mac_ptr += *offset_size;
- read_unsigned_leb128 (abfd, mac_ptr, &bytes_read);
- mac_ptr += bytes_read;
- read_direct_string (abfd, mac_ptr, &bytes_read);
- mac_ptr += bytes_read;
- }
- break;
+ /* Vendor opcode descriptions. */
+ if ((flags & 4) != 0)
+ {
+ unsigned int i, count;
- default:
- break;
+ count = read_1_byte (abfd, mac_ptr);
+ ++mac_ptr;
+ for (i = 0; i < count; ++i)
+ {
+ unsigned int opcode, bytes_read;
+ unsigned long arg;
+
+ opcode = read_1_byte (abfd, mac_ptr);
+ ++mac_ptr;
+ opcode_definitions[opcode] = mac_ptr;
+ arg = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read);
+ mac_ptr += bytes_read;
+ mac_ptr += arg;
+ }
}
- } while (macinfo_type != 0 && current_file == NULL);
+ }
- /* Second pass: Process all entries.
+ return mac_ptr;
+}
- Use the AT_COMMAND_LINE flag to determine whether we are still processing
- command-line macro definitions/undefinitions. This flag is unset when we
- reach the first DW_MACINFO_start_file entry. */
+/* A helper for dwarf_decode_macros that handles the GNU extensions,
+ including DW_GNU_MACINFO_transparent_include. */
- mac_ptr = dwarf2_per_objfile->macinfo.buffer + offset;
+static void
+dwarf_decode_macro_bytes (bfd *abfd, gdb_byte *mac_ptr, gdb_byte *mac_end,
+ struct macro_source_file *current_file,
+ struct line_header *lh, char *comp_dir,
+ struct dwarf2_section_info *section,
+ int section_is_gnu,
+ unsigned int offset_size,
+ struct objfile *objfile)
+{
+ enum dwarf_macro_record_type macinfo_type;
+ int at_commandline;
+ gdb_byte *opcode_definitions[256];
+
+ mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr,
+ &offset_size, section_is_gnu);
+ if (mac_ptr == NULL)
+ {
+ /* We already issued a complaint. */
+ return;
+ }
/* Determines if GDB is still before first DW_MACINFO_start_file. If true
GDB is still reading the definitions from command line. First
/* Do we at least have room for a macinfo type byte? */
if (mac_ptr >= mac_end)
{
- dwarf2_macros_too_long_complaint ();
+ dwarf2_macros_too_long_complaint (section);
break;
}
macinfo_type = read_1_byte (abfd, mac_ptr);
mac_ptr++;
+ /* Note that we rely on the fact that the corresponding GNU and
+ DWARF constants are the same. */
switch (macinfo_type)
{
/* A zero macinfo type indicates the end of the macro
case 0:
break;
- case DW_MACINFO_define:
- case DW_MACINFO_undef:
+ case DW_MACRO_GNU_define:
+ case DW_MACRO_GNU_undef:
+ case DW_MACRO_GNU_define_indirect:
+ case DW_MACRO_GNU_undef_indirect:
{
unsigned int bytes_read;
int line;
char *body;
+ int is_define;
- line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read);
- mac_ptr += bytes_read;
- body = read_direct_string (abfd, mac_ptr, &bytes_read);
- mac_ptr += bytes_read;
+ line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read);
+ mac_ptr += bytes_read;
+
+ if (macinfo_type == DW_MACRO_GNU_define
+ || macinfo_type == DW_MACRO_GNU_undef)
+ {
+ body = read_direct_string (abfd, mac_ptr, &bytes_read);
+ mac_ptr += bytes_read;
+ }
+ else
+ {
+ LONGEST str_offset;
+
+ str_offset = read_offset_1 (abfd, mac_ptr, offset_size);
+ mac_ptr += offset_size;
+
+ body = read_indirect_string_at_offset (abfd, str_offset);
+ }
+ is_define = (macinfo_type == DW_MACRO_GNU_define
+ || macinfo_type == DW_MACRO_GNU_define_indirect);
if (! current_file)
{
/* DWARF violation as no main source is present. */
complaint (&symfile_complaints,
_("debug info with no main source gives macro %s "
"on line %d: %s"),
- macinfo_type == DW_MACINFO_define ?
- _("definition") :
- macinfo_type == DW_MACINFO_undef ?
- _("undefinition") :
- _("something-or-other"), line, body);
+ is_define ? _("definition") : _("undefinition"),
+ line, body);
break;
}
if ((line == 0 && !at_commandline)
complaint (&symfile_complaints,
_("debug info gives %s macro %s with %s line %d: %s"),
at_commandline ? _("command-line") : _("in-file"),
- macinfo_type == DW_MACINFO_define ?
- _("definition") :
- macinfo_type == DW_MACINFO_undef ?
- _("undefinition") :
- _("something-or-other"),
+ is_define ? _("definition") : _("undefinition"),
line == 0 ? _("zero") : _("non-zero"), line, body);
- if (macinfo_type == DW_MACINFO_define)
+ if (is_define)
parse_macro_definition (current_file, line, body);
- else if (macinfo_type == DW_MACINFO_undef)
- macro_undef (current_file, line, body);
+ else
+ {
+ gdb_assert (macinfo_type == DW_MACRO_GNU_undef
+ || macinfo_type == DW_MACRO_GNU_undef_indirect);
+ macro_undef (current_file, line, body);
+ }
}
break;
- case DW_MACINFO_start_file:
+ case DW_MACRO_GNU_start_file:
{
unsigned int bytes_read;
int line, file;
if (at_commandline)
{
- /* This DW_MACINFO_start_file was executed in the pass one. */
+ /* This DW_MACRO_GNU_start_file was executed in the
+ pass one. */
at_commandline = 0;
}
else
current_file = macro_start_file (file, line,
current_file, comp_dir,
- lh, cu->objfile);
+ lh, objfile);
}
break;
- case DW_MACINFO_end_file:
+ case DW_MACRO_GNU_end_file:
if (! current_file)
complaint (&symfile_complaints,
_("macro debug info has an unmatched "
current_file = current_file->included_by;
if (! current_file)
{
- enum dwarf_macinfo_record_type next_type;
+ enum dwarf_macro_record_type next_type;
/* GCC circa March 2002 doesn't produce the zero
type byte marking the end of the compilation
/* Do we at least have room for a macinfo type byte? */
if (mac_ptr >= mac_end)
{
- dwarf2_macros_too_long_complaint ();
+ dwarf2_macros_too_long_complaint (section);
return;
}
}
break;
+ case DW_MACRO_GNU_transparent_include:
+ {
+ LONGEST offset;
+
+ offset = read_offset_1 (abfd, mac_ptr, offset_size);
+ mac_ptr += offset_size;
+
+ dwarf_decode_macro_bytes (abfd,
+ section->buffer + offset,
+ mac_end, current_file,
+ lh, comp_dir,
+ section, section_is_gnu,
+ offset_size, objfile);
+ }
+ break;
+
case DW_MACINFO_vendor_ext:
- {
- unsigned int bytes_read;
- int constant;
+ if (!section_is_gnu)
+ {
+ unsigned int bytes_read;
+ int constant;
- constant = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read);
- mac_ptr += bytes_read;
- read_direct_string (abfd, mac_ptr, &bytes_read);
- mac_ptr += bytes_read;
+ constant = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read);
+ mac_ptr += bytes_read;
+ read_direct_string (abfd, mac_ptr, &bytes_read);
+ mac_ptr += bytes_read;
- /* We don't recognize any vendor extensions. */
- }
- break;
+ /* We don't recognize any vendor extensions. */
+ break;
+ }
+ /* FALLTHROUGH */
+
+ default:
+ mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions,
+ mac_ptr, abfd, offset_size,
+ section);
+ if (mac_ptr == NULL)
+ return;
+ break;
}
} while (macinfo_type != 0);
}
+static void
+dwarf_decode_macros (struct line_header *lh, unsigned int offset,
+ char *comp_dir, bfd *abfd,
+ struct dwarf2_cu *cu,
+ struct dwarf2_section_info *section,
+ int section_is_gnu)
+{
+ gdb_byte *mac_ptr, *mac_end;
+ struct macro_source_file *current_file = 0;
+ enum dwarf_macro_record_type macinfo_type;
+ unsigned int offset_size = cu->header.offset_size;
+ gdb_byte *opcode_definitions[256];
+
+ dwarf2_read_section (dwarf2_per_objfile->objfile, section);
+ if (section->buffer == NULL)
+ {
+ complaint (&symfile_complaints, _("missing %s section"),
+ section->asection->name);
+ return;
+ }
+
+ /* First pass: Find the name of the base filename.
+ This filename is needed in order to process all macros whose definition
+ (or undefinition) comes from the command line. These macros are defined
+ before the first DW_MACINFO_start_file entry, and yet still need to be
+ associated to the base file.
+
+ To determine the base file name, we scan the macro definitions until we
+ reach the first DW_MACINFO_start_file entry. We then initialize
+ CURRENT_FILE accordingly so that any macro definition found before the
+ first DW_MACINFO_start_file can still be associated to the base file. */
+
+ mac_ptr = section->buffer + offset;
+ mac_end = section->buffer + section->size;
+
+ mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr,
+ &offset_size, section_is_gnu);
+ if (mac_ptr == NULL)
+ {
+ /* We already issued a complaint. */
+ return;
+ }
+
+ do
+ {
+ /* Do we at least have room for a macinfo type byte? */
+ if (mac_ptr >= mac_end)
+ {
+ /* Complaint is printed during the second pass as GDB will probably
+ stop the first pass earlier upon finding
+ DW_MACINFO_start_file. */
+ break;
+ }
+
+ macinfo_type = read_1_byte (abfd, mac_ptr);
+ mac_ptr++;
+
+ /* Note that we rely on the fact that the corresponding GNU and
+ DWARF constants are the same. */
+ switch (macinfo_type)
+ {
+ /* A zero macinfo type indicates the end of the macro
+ information. */
+ case 0:
+ break;
+
+ case DW_MACRO_GNU_define:
+ case DW_MACRO_GNU_undef:
+ /* Only skip the data by MAC_PTR. */
+ {
+ unsigned int bytes_read;
+
+ read_unsigned_leb128 (abfd, mac_ptr, &bytes_read);
+ mac_ptr += bytes_read;
+ read_direct_string (abfd, mac_ptr, &bytes_read);
+ mac_ptr += bytes_read;
+ }
+ break;
+
+ case DW_MACRO_GNU_start_file:
+ {
+ unsigned int bytes_read;
+ int line, file;
+
+ line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read);
+ mac_ptr += bytes_read;
+ file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read);
+ mac_ptr += bytes_read;
+
+ current_file = macro_start_file (file, line, current_file,
+ comp_dir, lh, cu->objfile);
+ }
+ break;
+
+ case DW_MACRO_GNU_end_file:
+ /* No data to skip by MAC_PTR. */
+ break;
+
+ case DW_MACRO_GNU_define_indirect:
+ case DW_MACRO_GNU_undef_indirect:
+ {
+ unsigned int bytes_read;
+
+ read_unsigned_leb128 (abfd, mac_ptr, &bytes_read);
+ mac_ptr += bytes_read;
+ mac_ptr += offset_size;
+ }
+ break;
+
+ case DW_MACRO_GNU_transparent_include:
+ /* Note that, according to the spec, a transparent include
+ chain cannot call DW_MACRO_GNU_start_file. So, we can just
+ skip this opcode. */
+ mac_ptr += offset_size;
+ break;
+
+ case DW_MACINFO_vendor_ext:
+ /* Only skip the data by MAC_PTR. */
+ if (!section_is_gnu)
+ {
+ unsigned int bytes_read;
+
+ read_unsigned_leb128 (abfd, mac_ptr, &bytes_read);
+ mac_ptr += bytes_read;
+ read_direct_string (abfd, mac_ptr, &bytes_read);
+ mac_ptr += bytes_read;
+ }
+ /* FALLTHROUGH */
+
+ default:
+ mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions,
+ mac_ptr, abfd, offset_size,
+ section);
+ if (mac_ptr == NULL)
+ return;
+ break;
+ }
+ } while (macinfo_type != 0 && current_file == NULL);
+
+ /* Second pass: Process all entries.
+
+ Use the AT_COMMAND_LINE flag to determine whether we are still processing
+ command-line macro definitions/undefinitions. This flag is unset when we
+ reach the first DW_MACINFO_start_file entry. */
+
+ dwarf_decode_macro_bytes (abfd, section->buffer + offset, mac_end,
+ current_file, lh, comp_dir, section, section_is_gnu,
+ offset_size, cu->objfile);
+}
+
/* Check if the attribute's form is a DW_FORM_block*
if so return true else false. */
static int
if (attr)
set_cu_language (DW_UNSND (attr), cu);
else
- set_cu_language (language_minimal, cu);
+ {
+ cu->language = language_minimal;
+ cu->language_defn = language_def (cu->language);
+ }
}
/* Release one cached compilation unit, CU. We unlink it from the tree
&& !HAVE_GNAT_AUX_INFO (type))
INIT_GNAT_SPECIFIC (type);
- if (cu->per_cu->from_debug_types)
+ if (cu->per_cu->debug_type_section)
type_hash_ptr = &dwarf2_per_objfile->debug_types_type_hash;
else
type_hash_ptr = &dwarf2_per_objfile->debug_info_type_hash;
struct dwarf2_offset_and_type *slot, ofs;
htab_t type_hash;
- if (per_cu->from_debug_types)
+ if (per_cu->debug_type_section)
type_hash = dwarf2_per_objfile->debug_types_type_hash;
else
type_hash = dwarf2_per_objfile->debug_info_type_hash;
struct dwarf2_per_cu_data *per_cu;
per_cu = (struct dwarf2_per_cu_data *) *slot;
+
+ /* cu->dependencies references may not yet have been ever read if QUIT aborts
+ reading of the chain. As such dependencies remain valid it is not much
+ useful to track and undo them during QUIT cleanups. */
+ if (per_cu->cu == NULL)
+ return 1;
+
if (per_cu->cu->mark)
return 1;
per_cu->cu->mark = 1;
static void
munmap_section_buffer (struct dwarf2_section_info *info)
{
- if (info->was_mmapped)
+ if (info->map_addr != NULL)
{
#ifdef HAVE_MMAP
- intptr_t begin = (intptr_t) info->buffer;
- intptr_t map_begin = begin & ~(pagesize - 1);
- size_t map_length = info->size + begin - map_begin;
+ int res;
- gdb_assert (munmap ((void *) map_begin, map_length) == 0);
+ res = munmap (info->map_addr, info->map_len);
+ gdb_assert (res == 0);
#else
/* Without HAVE_MMAP, we should never be here to begin with. */
gdb_assert_not_reached ("no mmap support");
dwarf2_per_objfile_free (struct objfile *objfile, void *d)
{
struct dwarf2_per_objfile *data = d;
+ int ix;
+ struct dwarf2_section_info *section;
/* This is sorted according to the order they're defined in to make it easier
to keep in sync. */
munmap_section_buffer (&data->line);
munmap_section_buffer (&data->loc);
munmap_section_buffer (&data->macinfo);
+ munmap_section_buffer (&data->macro);
munmap_section_buffer (&data->str);
munmap_section_buffer (&data->ranges);
- munmap_section_buffer (&data->types);
munmap_section_buffer (&data->frame);
munmap_section_buffer (&data->eh_frame);
munmap_section_buffer (&data->gdb_index);
+
+ for (ix = 0;
+ VEC_iterate (dwarf2_section_info_def, data->types, ix, section);
+ ++ix)
+ munmap_section_buffer (section);
+
+ VEC_free (dwarf2_section_info_def, data->types);
}
\f
const char *str;
};
-/* Hash function for a strtab_entry. */
+/* Hash function for a strtab_entry.
+
+ Function is used only during write_hash_table so no index format backward
+ compatibility is needed. */
static hashval_t
hash_strtab_entry (const void *e)
{
const struct strtab_entry *entry = e;
- return mapped_index_string_hash (entry->str);
+ return mapped_index_string_hash (INT_MAX, entry->str);
}
/* Equality function for a strtab_entry. */
}
/* Find a slot in SYMTAB for the symbol NAME. Returns a pointer to
- the slot. */
+ the slot.
+
+ Function is used only during write_hash_table so no index format backward
+ compatibility is needed. */
static struct symtab_index_entry **
find_slot (struct mapped_symtab *symtab, const char *name)
{
- offset_type index, step, hash = mapped_index_string_hash (name);
+ offset_type index, step, hash = mapped_index_string_hash (INT_MAX, name);
index = hash & (symtab->size - 1);
step = ((hash * 17) & (symtab->size - 1)) | 1;
/* Don't push an index twice. Due to how we add entries we only
have to check the last one. */
if (VEC_empty (offset_type, (*slot)->cu_indices)
- || VEC_length (offset_type, (*slot)->cu_indices) != cu_index)
+ || VEC_last (offset_type, (*slot)->cu_indices) != cu_index)
VEC_safe_push (offset_type, (*slot)->cu_indices, cu_index);
}
psymtab->n_static_syms, info->cu_index,
1);
- store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, entry->offset);
+ store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, entry->per_cu.offset);
obstack_grow (info->types_list, val, 8);
store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, entry->type_offset);
obstack_grow (info->types_list, val, 8);
htab_t cu_index_htab;
struct psymtab_cu_index_map *psymtab_cu_index_map;
- if (!objfile->psymtabs)
+ if (!objfile->psymtabs || !objfile->psymtabs_addrmap)
return;
+
if (dwarf2_per_objfile->using_index)
error (_("Cannot use an index to create the index"));
+ if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) > 1)
+ error (_("Cannot make an index when the file has multiple .debug_types sections"));
+
if (stat (objfile->name, &st) < 0)
perror_with_name (objfile->name);
total_len = size_of_contents;
/* The version number. */
- val = MAYBE_SWAP (4);
+ val = MAYBE_SWAP (5);
obstack_grow (&contents, &val, sizeof (val));
/* The offset of the CU list from the start of the file. */
do_cleanups (cleanup);
}
-/* The mapped index file format is designed to be directly mmap()able
- on any architecture. In most cases, a datum is represented using a
- little-endian 32-bit integer value, called an offset_type. Big
- endian machines must byte-swap the values before using them.
- Exceptions to this rule are noted. The data is laid out such that
- alignment is always respected.
-
- A mapped index consists of several sections.
-
- 1. The file header. This is a sequence of values, of offset_type
- unless otherwise noted:
-
- [0] The version number, currently 4. Versions 1, 2 and 3 are
- obsolete.
- [1] The offset, from the start of the file, of the CU list.
- [2] The offset, from the start of the file, of the types CU list.
- Note that this section can be empty, in which case this offset will
- be equal to the next offset.
- [3] The offset, from the start of the file, of the address section.
- [4] The offset, from the start of the file, of the symbol table.
- [5] The offset, from the start of the file, of the constant pool.
-
- 2. The CU list. This is a sequence of pairs of 64-bit
- little-endian values, sorted by the CU offset. The first element
- in each pair is the offset of a CU in the .debug_info section. The
- second element in each pair is the length of that CU. References
- to a CU elsewhere in the map are done using a CU index, which is
- just the 0-based index into this table. Note that if there are
- type CUs, then conceptually CUs and type CUs form a single list for
- the purposes of CU indices.
-
- 3. The types CU list. This is a sequence of triplets of 64-bit
- little-endian values. In a triplet, the first value is the CU
- offset, the second value is the type offset in the CU, and the
- third value is the type signature. The types CU list is not
- sorted.
-
- 4. The address section. The address section consists of a sequence
- of address entries. Each address entry has three elements.
- [0] The low address. This is a 64-bit little-endian value.
- [1] The high address. This is a 64-bit little-endian value.
- Like DW_AT_high_pc, the value is one byte beyond the end.
- [2] The CU index. This is an offset_type value.
-
- 5. The symbol table. This is a hash table. The size of the hash
- table is always a power of 2. The initial hash and the step are
- currently defined by the `find_slot' function.
-
- Each slot in the hash table consists of a pair of offset_type
- values. The first value is the offset of the symbol's name in the
- constant pool. The second value is the offset of the CU vector in
- the constant pool.
-
- If both values are 0, then this slot in the hash table is empty.
- This is ok because while 0 is a valid constant pool index, it
- cannot be a valid index for both a string and a CU vector.
-
- A string in the constant pool is stored as a \0-terminated string,
- as you'd expect.
-
- A CU vector in the constant pool is a sequence of offset_type
- values. The first value is the number of CU indices in the vector.
- Each subsequent value is the index of a CU in the CU list. This
- element in the hash table is used to indicate which CUs define the
- symbol.
-
- 6. The constant pool. This is simply a bunch of bytes. It is
- organized so that alignment is correct: CU vectors are stored
- first, followed by strings. */
+/* Implementation of the `save gdb-index' command.
+
+ Note that the file format used by this command is documented in the
+ GDB manual. Any changes here must be documented there. */
static void
save_gdb_index_command (char *arg, int from_tty)
value);
}
+static void
+show_check_physname (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c, const char *value)
+{
+ fprintf_filtered (file,
+ _("Whether to check \"physname\" is %s.\n"),
+ value);
+}
+
void _initialize_dwarf2_read (void);
void
NULL,
&setdebuglist, &showdebuglist);
+ add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\
+Set cross-checking of \"physname\" code against demangler."), _("\
+Show cross-checking of \"physname\" code against demangler."), _("\
+When enabled, GDB's internal \"physname\" code is checked against\n\
+the demangler."),
+ NULL, show_check_physname,
+ &setdebuglist, &showdebuglist);
+
c = add_cmd ("gdb-index", class_files, save_gdb_index_command,
_("\
Save a gdb-index file.\n\
projects / deliverable / binutils-gdb.git / blobdiff