#include "expression.h"
+#include <algorithm>
+
/* Provide a way to test if we have both ECOFF and ELF symbol tables.
We use this define in order to know whether we should override a
symbol's ECOFF section with its ELF section. This is necessary in
static struct ecoff_debug_info *debug_info;
-/* Pointer to current file decriptor record, and its index. */
+/* Pointer to current file descriptor record, and its index. */
static FDR *cur_fdr;
static int cur_fd;
init_header_files ();
/* Make sure all the FDR information is swapped in. */
- if (info->fdr == (FDR *) NULL)
+ if (info->fdr == NULL)
{
char *fdr_src;
char *fdr_end;
objfile->name);
printf_unfiltered (_("You should compile with -g2 or "
"-g3 for best debugging support.\n"));
- gdb_flush (gdb_stdout);
}
#endif
}
if (regno < 0 || regno >= gdbarch_num_cooked_regs (gdbarch))
{
reg_value_complaint (regno, gdbarch_num_cooked_regs (gdbarch),
- SYMBOL_PRINT_NAME (sym));
+ sym->print_name ());
regno = gdbarch_sp_regnum (gdbarch); /* Known safe, though useless. */
}
long svalue = sh->value;
int bitsize;
- if (ext_sh == (char *) NULL)
+ if (ext_sh == NULL)
name = debug_info->ssext + sh->iss;
else
name = debug_info->ss + cur_fdr->issBase + sh->iss;
b = BLOCKVECTOR_BLOCK (SYMTAB_BLOCKVECTOR (top_stack->cur_st),
GLOBAL_BLOCK);
s = new_symbol (name);
- SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value;
+ SET_SYMBOL_VALUE_ADDRESS (s, (CORE_ADDR) sh->value);
add_data_symbol (sh, ax, bigend, s, LOC_STATIC, b, objfile, name);
break;
/* It is a FORTRAN common block. At least for SGI Fortran the
address is not in the symbol; we need to fix it later in
scan_file_globals. */
- int bucket = hashname (SYMBOL_LINKAGE_NAME (s));
+ int bucket = hashname (s->linkage_name ());
SYMBOL_VALUE_CHAIN (s) = global_sym_chain[bucket];
global_sym_chain[bucket] = s;
}
else
- SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value;
+ SET_SYMBOL_VALUE_ADDRESS (s, (CORE_ADDR) sh->value);
add_data_symbol (sh, ax, bigend, s, LOC_STATIC, b, objfile, name);
break;
s = new_symbol (name);
SYMBOL_DOMAIN (s) = VAR_DOMAIN; /* So that it can be used */
SYMBOL_ACLASS_INDEX (s) = LOC_LABEL; /* but not misused. */
- SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value;
+ SET_SYMBOL_VALUE_ADDRESS (s, (CORE_ADDR) sh->value);
SYMBOL_TYPE (s) = objfile_type (objfile)->builtin_int;
add_symbol (s, top_stack->cur_st, top_stack->cur_block);
break;
/* Create a new type or use the pending type. */
pend = is_pending_symbol (cur_fdr, ext_sh);
- if (pend == (struct mdebug_pending *) NULL)
+ if (pend == NULL)
{
t = new_type (NULL);
add_pending (cur_fdr, ext_sh, t);
FIELD_BITSIZE (*f) = 0;
enum_sym = allocate_symbol (mdebugread_objfile);
- SYMBOL_SET_LINKAGE_NAME
- (enum_sym,
- (char *) obstack_copy0 (&mdebugread_objfile->objfile_obstack,
- f->name, strlen (f->name)));
+ enum_sym->set_linkage_name
+ (obstack_strdup (&mdebugread_objfile->objfile_obstack,
+ f->name));
SYMBOL_ACLASS_INDEX (enum_sym) = LOC_CONST;
SYMBOL_TYPE (enum_sym) = t;
SYMBOL_DOMAIN (enum_sym) = VAR_DOMAIN;
/* Parse the type or use the pending type. */
pend = is_pending_symbol (cur_fdr, ext_sh);
- if (pend == (struct mdebug_pending *) NULL)
+ if (pend == NULL)
{
- t = parse_type (cur_fd, ax, sh->index, (int *) NULL, bigend, name);
+ t = parse_type (cur_fd, ax, sh->index, NULL, bigend, name);
add_pending (cur_fdr, ext_sh, t);
}
else
for anything except pointers or functions. */
}
else
- TYPE_NAME (SYMBOL_TYPE (s)) = SYMBOL_LINKAGE_NAME (s);
+ TYPE_NAME (SYMBOL_TYPE (s)) = s->linkage_name ();
}
break;
/* Basic types. */
-static const struct objfile_data *basic_type_data;
+static const struct objfile_key<struct type *,
+ gdb::noop_deleter<struct type *>>
+ basic_type_data;
static struct type *
basic_type (int bt, struct objfile *objfile)
{
struct gdbarch *gdbarch = get_objfile_arch (objfile);
- struct type **map_bt
- = (struct type **) objfile_data (objfile, basic_type_data);
+ struct type **map_bt = basic_type_data.get (objfile);
struct type *tp;
if (bt >= btMax)
{
map_bt = OBSTACK_CALLOC (&objfile->objfile_obstack,
btMax, struct type *);
- set_objfile_data (objfile, basic_type_data, map_bt);
+ basic_type_data.set (objfile, map_bt);
}
if (map_bt[bt])
int width = AUX_GET_WIDTH (bigend, ax);
/* Inhibit core dumps if TIR is corrupted. */
- if (bs == (int *) NULL)
+ if (bs == NULL)
{
/* Alpha cc -migrate encodes char and unsigned char types
as short and unsigned short types with a field width of 8.
xref_fh = get_rfd (fd, rf);
xref_fd = xref_fh - debug_info->fdr;
tp = parse_type (xref_fd, debug_info->external_aux + xref_fh->iauxBase,
- rn->index, (int *) NULL, xref_fh->fBigendian, sym_name);
+ rn->index, NULL, xref_fh->fBigendian, sym_name);
}
/* All these types really point to some (common) MIPS type
/* Try to cross reference this type, build new type on failure. */
ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name);
- if (tp == (struct type *) NULL)
+ if (tp == NULL)
tp = init_type (mdebugread_objfile, type_code, 0, NULL);
/* DEC c89 produces cross references to qualified aggregate types,
else if (TYPE_NAME (tp) == NULL
|| strcmp (TYPE_NAME (tp), name) != 0)
TYPE_NAME (tp)
- = ((const char *)
- obstack_copy0 (&mdebugread_objfile->objfile_obstack,
- name, strlen (name)));
+ = obstack_strdup (&mdebugread_objfile->objfile_obstack, name);
}
}
/* Try to cross reference this type, build new type on failure. */
ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name);
- if (tp == (struct type *) NULL)
+ if (tp == NULL)
tp = init_type (mdebugread_objfile, type_code, 0, NULL);
/* Make sure that TYPE_CODE(tp) has an expected type code.
if (TYPE_NAME (tp) == NULL
|| strcmp (TYPE_NAME (tp), name) != 0)
TYPE_NAME (tp)
- = ((const char *)
- obstack_copy0 (&mdebugread_objfile->objfile_obstack,
- name, strlen (name)));
+ = obstack_strdup (&mdebugread_objfile->objfile_obstack, name);
}
}
if (t->bt == btTypedef)
/* Try to cross reference this type, it should succeed. */
ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name);
- if (tp == (struct type *) NULL)
+ if (tp == NULL)
{
complaint (_("unable to cross ref btTypedef for %s"), sym_name);
tp = basic_type (btInt, mdebugread_objfile);
indx = parse_type (fh - debug_info->fdr,
debug_info->external_aux + fh->iauxBase,
- id, (int *) NULL, bigend, sym_name);
+ id, NULL, bigend, sym_name);
/* The bounds type should be an integer type, but might be anything
else due to corrupt aux entries. */
ax++;
rf = AUX_GET_WIDTH (bigend, ax); /* bit size of array element */
- range = create_static_range_type ((struct type *) NULL, indx,
- lower, upper);
+ range = create_static_range_type (NULL, indx, lower, upper);
- t = create_array_type ((struct type *) NULL, *tpp, range);
+ t = create_array_type (NULL, *tpp, range);
/* We used to fill in the supplied array element bitsize
here if the TYPE_LENGTH of the target type was zero.
s = new_symbol (sh_name);
SYMBOL_DOMAIN (s) = VAR_DOMAIN;
SYMBOL_CLASS (s) = LOC_BLOCK;
- /* Donno its type, hope int is ok. */
+ /* Don't know its type, hope int is ok. */
SYMBOL_TYPE (s)
= lookup_function_type (objfile_type (pst->objfile)->builtin_int);
add_symbol (s, top_stack->cur_st, top_stack->cur_block);
/* Note that the case of a symbol with indexNil must be handled
anyways by parse_symbol(). */
- parse_symbol (&es->asym, ax, (char *) NULL,
+ parse_symbol (&es->asym, ax, NULL,
bigend, section_offsets, objfile);
break;
default:
the text section (and fh->adr) really starts at zero. */
text_sect = bfd_get_section_by_name (cur_bfd, ".text");
if (text_sect != NULL
- && (bfd_get_section_flags (cur_bfd, text_sect) & SEC_RELOC))
+ && (bfd_section_flags (text_sect) & SEC_RELOC))
relocatable = 1;
extern_tab = XOBNEWVEC (&objfile->objfile_obstack, EXTR, hdr->iextMax);
(inefficient;
assumes no side-effects result from ignoring ECOFF symbol)
3) create it, but lookup ELF's minimal symbol and use it's section
- during relocation, then modify "uniqify" phase to merge and
+ during relocation, then modify "uniquify" phase to merge and
eliminate the duplicate symbol
(highly inefficient)
/* Handle stabs continuation. */
{
char *stabstring = debug_info->ss + fh->issBase + sh.iss;
+ /* If we need to heap-allocate STABSTRING, this owns
+ it. */
+ gdb::unique_xmalloc_ptr<char> stabstring_storage;
int len = strlen (stabstring);
while (stabstring[len - 1] == '\\')
stabstring2 = debug_info->ss + fh->issBase + sh2.iss;
len2 = strlen (stabstring2);
- /* Concatinate stabstring2 with stabstring1. */
- if (stabstring
- && stabstring != debug_info->ss + fh->issBase + sh.iss)
- stabstring
- = (char *) xrealloc (stabstring, len + len2 + 1);
+ /* Concatenate stabstring2 with stabstring1. */
+ if (stabstring_storage != nullptr)
+ {
+ stabstring_storage.reset
+ ((char *) xrealloc (stabstring_storage.release (),
+ len + len2 + 1));
+ stabstring = stabstring_storage.get ();
+ }
else
{
- stabstring = (char *) xmalloc (len + len2 + 1);
+ stabstring_storage.reset
+ ((char *) xmalloc (len + len2 + 1));
+ stabstring = stabstring_storage.get ();
strcpy (stabstring, stabstring1);
}
strcpy (stabstring + len, stabstring2);
namestring = gdbarch_static_transform_name
(gdbarch, namestring);
- add_psymbol_to_list (namestring, p - namestring, 1,
- VAR_DOMAIN, LOC_STATIC,
+ add_psymbol_to_list (gdb::string_view (namestring,
+ p - namestring),
+ true, VAR_DOMAIN, LOC_STATIC,
SECT_OFF_DATA (objfile),
psymbol_placement::STATIC,
sh.value,
/* The addresses in these entries are reported
to be wrong. See the code that reads 'G's
for symtabs. */
- add_psymbol_to_list (namestring, p - namestring, 1,
- VAR_DOMAIN, LOC_STATIC,
+ add_psymbol_to_list (gdb::string_view (namestring,
+ p - namestring),
+ true, VAR_DOMAIN, LOC_STATIC,
SECT_OFF_DATA (objfile),
psymbol_placement::GLOBAL,
sh.value,
|| (p == namestring + 1
&& namestring[0] != ' '))
{
- add_psymbol_to_list (namestring, p - namestring, 1,
- STRUCT_DOMAIN, LOC_TYPEDEF,
- -1,
- psymbol_placement::STATIC,
- 0, psymtab_language, objfile);
+ add_psymbol_to_list
+ (gdb::string_view (namestring, p - namestring),
+ true, STRUCT_DOMAIN, LOC_TYPEDEF, -1,
+ psymbol_placement::STATIC, 0, psymtab_language,
+ objfile);
if (p[2] == 't')
{
/* Also a typedef with the same name. */
- add_psymbol_to_list (namestring,
- p - namestring, 1,
- VAR_DOMAIN, LOC_TYPEDEF,
- -1,
- psymbol_placement::STATIC,
- 0, psymtab_language,
- objfile);
+ add_psymbol_to_list
+ (gdb::string_view (namestring,
+ p - namestring),
+ true, VAR_DOMAIN, LOC_TYPEDEF, -1,
+ psymbol_placement::STATIC, 0,
+ psymtab_language, objfile);
p += 1;
}
}
if (p != namestring) /* a name is there, not
just :T... */
{
- add_psymbol_to_list (namestring, p - namestring, 1,
- VAR_DOMAIN, LOC_TYPEDEF,
- -1,
- psymbol_placement::STATIC,
- 0, psymtab_language, objfile);
+ add_psymbol_to_list
+ (gdb::string_view (namestring,
+ p - namestring),
+ true, VAR_DOMAIN, LOC_TYPEDEF, -1,
+ psymbol_placement::STATIC, 0, psymtab_language,
+ objfile);
}
check_enum:
/* If this is an enumerated type, we need to add
/* Note that the value doesn't matter for
enum constants in psymtabs, just in
symtabs. */
- add_psymbol_to_list (p, q - p, 1,
- VAR_DOMAIN, LOC_CONST,
- -1,
+ add_psymbol_to_list (gdb::string_view (p,
+ q - p),
+ true, VAR_DOMAIN,
+ LOC_CONST, -1,
psymbol_placement::STATIC,
0, psymtab_language,
objfile);
continue;
case 'c':
/* Constant, e.g. from "const" in Pascal. */
- add_psymbol_to_list (namestring, p - namestring, 1,
- VAR_DOMAIN, LOC_CONST, -1,
+ add_psymbol_to_list (gdb::string_view (namestring,
+ p - namestring),
+ true, VAR_DOMAIN, LOC_CONST, -1,
psymbol_placement::STATIC,
0, psymtab_language, objfile);
continue;
function_outside_compilation_unit_complaint
(copy.c_str ());
}
- add_psymbol_to_list (namestring, p - namestring, 1,
- VAR_DOMAIN, LOC_BLOCK,
+ add_psymbol_to_list (gdb::string_view (namestring,
+ p - namestring),
+ true, VAR_DOMAIN, LOC_BLOCK,
SECT_OFF_TEXT (objfile),
psymbol_placement::STATIC,
sh.value,
function_outside_compilation_unit_complaint
(copy.c_str ());
}
- add_psymbol_to_list (namestring, p - namestring, 1,
- VAR_DOMAIN, LOC_BLOCK,
+ add_psymbol_to_list (gdb::string_view (namestring,
+ p - namestring),
+ true, VAR_DOMAIN, LOC_BLOCK,
SECT_OFF_TEXT (objfile),
psymbol_placement::GLOBAL,
sh.value,
hex_string (type_code)); /* CUR_SYMBOL_TYPE */
continue;
}
- if (stabstring
- && stabstring != debug_info->ss + fh->issBase + sh.iss)
- xfree (stabstring);
}
/* end - Handle continuation */
}
/* Usually there is a local and a global stProc symbol
for a function. This means that the function name
- has already been entered into the mimimal symbol table
+ has already been entered into the minimal symbol table
while processing the global symbols in pass 2 above.
One notable exception is the PROGRAM name from
f77 compiled executables, it is only put out as
symbol table, and the MAIN__ symbol via the minimal
symbol table. */
if (sh.st == stProc)
- add_psymbol_to_list (sym_name, strlen (sym_name), 1,
+ add_psymbol_to_list (sym_name, true,
VAR_DOMAIN, LOC_BLOCK,
section,
psymbol_placement::GLOBAL,
sh.value, psymtab_language, objfile);
else
- add_psymbol_to_list (sym_name, strlen (sym_name), 1,
+ add_psymbol_to_list (sym_name, true,
VAR_DOMAIN, LOC_BLOCK,
section,
psymbol_placement::STATIC,
&& sh.iss != 0
&& sh.index != cur_sdx + 2)
{
- add_psymbol_to_list (sym_name, strlen (sym_name), 1,
+ add_psymbol_to_list (sym_name, true,
STRUCT_DOMAIN, LOC_TYPEDEF, -1,
psymbol_placement::STATIC,
0, psymtab_language, objfile);
continue;
}
/* Use this gdb symbol. */
- add_psymbol_to_list (sym_name, strlen (sym_name), 1,
+ add_psymbol_to_list (sym_name, true,
VAR_DOMAIN, theclass, section,
psymbol_placement::STATIC,
sh.value, psymtab_language, objfile);
break;
}
char *sym_name = debug_info->ssext + psh->iss;
- add_psymbol_to_list (sym_name, strlen (sym_name), 1,
+ add_psymbol_to_list (sym_name, true,
VAR_DOMAIN, theclass,
section,
psymbol_placement::GLOBAL,
&& save_pst->text_low_valid
&& !(objfile->flags & OBJF_REORDERED))
{
- for (partial_symtab *iter : objfile_psymtabs (objfile))
+ for (partial_symtab *iter : objfile->psymtabs ())
{
if (save_pst != iter
&& save_pst->raw_text_low () >= iter->raw_text_low ()
fh = f_idx + debug_info->fdr;
pst = fdr_to_pst[f_idx].pst;
- if (pst == (struct partial_symtab *) NULL)
+ if (pst == NULL)
continue;
/* This should catch stabs-in-ecoff. */
/* Skip the first file indirect entry as it is a self dependency for
source files or a reverse .h -> .c dependency for header files. */
pst->number_of_dependencies = 0;
- pst->dependencies = XOBNEWVEC (&objfile->objfile_obstack,
- partial_symtab *, (fh->crfd - 1));
+ pst->dependencies
+ = objfile->partial_symtabs->allocate_dependencies (fh->crfd - 1);
for (s_idx = 1; s_idx < fh->crfd; s_idx++)
{
RFDT rh;
if (rh == f_idx)
continue;
- /* Do not add to dependeny list if psymtab was empty. */
- if (fdr_to_pst[rh].pst == (struct partial_symtab *) NULL)
+ /* Do not add to dependency list if psymtab was empty. */
+ if (fdr_to_pst[rh].pst == NULL)
continue;
pst->dependencies[pst->number_of_dependencies++]
= fdr_to_pst[rh].pst;
/* Remove the dummy psymtab created for -O3 images above, if it is
still empty, to enable the detection of stripped executables. */
- if (objfile->psymtabs->next == NULL
- && objfile->psymtabs->number_of_dependencies == 0
- && objfile->psymtabs->n_global_syms == 0
- && objfile->psymtabs->n_static_syms == 0)
- objfile->psymtabs = NULL;
+ pst = objfile->partial_symtabs->psymtabs;
+ if (pst->next == NULL
+ && pst->number_of_dependencies == 0
+ && pst->n_global_syms == 0
+ && pst->n_static_syms == 0)
+ objfile->partial_symtabs->psymtabs = NULL;
}
/* If the current psymbol has an enumerated type, we need to add
/* Note that the value doesn't matter for enum constants
in psymtabs, just in symtabs. */
- add_psymbol_to_list (name, strlen (name), 1,
+ add_psymbol_to_list (name, true,
VAR_DOMAIN, LOC_CONST, -1,
psymbol_placement::STATIC, 0,
psymtab_language, objfile);
return;
pst->readin = 1;
- /* Read in all partial symbtabs on which this one is dependent.
+ /* Read in all partial symtabs on which this one is dependent.
NOTE that we do have circular dependencies, sigh. We solved
that by setting pst->readin before this point. */
mdebugread_objfile = objfile;
cur_fd = FDR_IDX (pst);
fh = ((cur_fd == -1)
- ? (FDR *) NULL
+ ? NULL
: debug_info->fdr + cur_fd);
cur_fdr = fh;
/* See comment in parse_partial_symbols about the @stabs sentinel. */
processing_gcc_compilation = 0;
- if (fh != (FDR *) NULL && fh->csym >= 2)
+ if (fh != NULL && fh->csym >= 2)
{
SYMR sh;
*tpp = parse_type (xref_fd,
debug_info->external_aux + fh->iauxBase,
sh.index,
- (int *) NULL,
+ NULL,
fh->fBigendian,
debug_info->ss + fh->issBase + sh.iss);
add_pending (fh, esh, *tpp);
*tpp = parse_type (xref_fd,
debug_info->external_aux + fh->iauxBase,
sh.index,
- (int *) NULL,
+ NULL,
fh->fBigendian,
debug_info->ss + fh->issBase + sh.iss);
}
inc = name[0];
ALL_BLOCK_SYMBOLS (block, iter, sym)
{
- if (SYMBOL_LINKAGE_NAME (sym)[0] == inc
+ if (sym->linkage_name ()[0] == inc
&& SYMBOL_DOMAIN (sym) == domain
&& SYMBOL_CLASS (sym) == theclass
- && strcmp (SYMBOL_LINKAGE_NAME (sym), name) == 0)
+ && strcmp (sym->linkage_name (), name) == 0)
return sym;
}
add_symbol (struct symbol *s, struct symtab *symtab, struct block *b)
{
symbol_set_symtab (s, symtab);
- dict_add_symbol (BLOCK_DICT (b), s);
+ mdict_add_symbol (BLOCK_MULTIDICT (b), s);
}
/* Add a new block B to a symtab S. */
/* Blocks with a smaller low bound should come first. */
-static int
-compare_blocks (const void *arg1, const void *arg2)
+static bool
+block_is_less_than (const struct block *b1, const struct block *b2)
{
- LONGEST addr_diff;
- struct block **b1 = (struct block **) arg1;
- struct block **b2 = (struct block **) arg2;
-
- addr_diff = (BLOCK_START ((*b1))) - (BLOCK_START ((*b2)));
- if (addr_diff == 0)
- return (BLOCK_END ((*b2))) - (BLOCK_END ((*b1)));
- return addr_diff;
+ CORE_ADDR start1 = BLOCK_START (b1);
+ CORE_ADDR start2 = BLOCK_START (b2);
+
+ if (start1 != start2)
+ return start1 < start2;
+
+ return (BLOCK_END (b2)) < (BLOCK_END (b1));
}
/* Sort the blocks of a symtab S.
* to detect -O3 images in advance.
*/
if (BLOCKVECTOR_NBLOCKS (bv) > FIRST_LOCAL_BLOCK + 1)
- qsort (&BLOCKVECTOR_BLOCK (bv, FIRST_LOCAL_BLOCK),
- BLOCKVECTOR_NBLOCKS (bv) - FIRST_LOCAL_BLOCK,
- sizeof (struct block *),
- compare_blocks);
+ std::sort (&BLOCKVECTOR_BLOCK (bv, FIRST_LOCAL_BLOCK),
+ &BLOCKVECTOR_BLOCK (bv, BLOCKVECTOR_NBLOCKS (bv)),
+ block_is_less_than);
{
CORE_ADDR high = 0;
}
/* Allocate and zero a new block of language LANGUAGE, and set its
- BLOCK_DICT. If function is non-zero, assume the block is
+ BLOCK_MULTIDICT. If function is non-zero, assume the block is
associated to a function, and make sure that the symbols are stored
linearly; otherwise, store them hashed. */
struct block *retval = XCNEW (struct block);
if (type == FUNCTION_BLOCK)
- BLOCK_DICT (retval) = dict_create_linear_expandable (language);
+ BLOCK_MULTIDICT (retval) = mdict_create_linear_expandable (language);
else
- BLOCK_DICT (retval) = dict_create_hashed_expandable (language);
+ BLOCK_MULTIDICT (retval) = mdict_create_hashed_expandable (language);
return retval;
}
SYMBOL_SET_LANGUAGE (s, psymtab_language,
&mdebugread_objfile->objfile_obstack);
- SYMBOL_SET_NAMES (s, name, strlen (name), 1, mdebugread_objfile);
+ SYMBOL_SET_NAMES (s, name, true, mdebugread_objfile);
return s;
}
void
_initialize_mdebugread (void)
{
- basic_type_data = register_objfile_data ();
-
mdebug_register_index
= register_symbol_register_impl (LOC_REGISTER, &mdebug_register_funcs);
mdebug_regparm_index