From: Tom Tromey <tom@tromey.com>
To: gdb-patches@sourceware.org
Cc: Tom Tromey <tom@tromey.com>
Subject: [PATCH 26/30] Adapt .gdb_index writer to new DWARF scanner
Date: Wed, 25 Aug 2021 20:19:33 -0600 [thread overview]
Message-ID: <20210826021937.1490292-27-tom@tromey.com> (raw)
In-Reply-To: <20210826021937.1490292-1-tom@tromey.com>
This updates the .gdb_index writer to work with the new DWARF scanner.
The .debug_names writer is deferred to another patch, to make review
simpler.
This introduces a small hack to psyms_seen_size, but is
inconsequential because this function will be deleted in a subsequent
patch.
---
gdb/dwarf2/index-write.c | 63 ++++++++++++++++++++++----
gdb/testsuite/gdb.dwarf2/gdb-index.exp | 5 +-
2 files changed, 59 insertions(+), 9 deletions(-)
diff --git a/gdb/dwarf2/index-write.c b/gdb/dwarf2/index-write.c
index 367db046f17..4a5ba484379 100644
--- a/gdb/dwarf2/index-write.c
+++ b/gdb/dwarf2/index-write.c
@@ -189,7 +189,7 @@ struct mapped_symtab
offset_type n_elements = 0;
std::vector<symtab_index_entry> data;
- /* Temporary storage for Ada names. */
+ /* Temporary storage for names. */
auto_obstack m_string_obstack;
};
@@ -1237,6 +1237,9 @@ check_dwarf64_offsets (dwarf2_per_objfile *per_objfile)
static size_t
psyms_seen_size (dwarf2_per_objfile *per_objfile)
{
+ if (per_objfile->per_bfd->using_index)
+ return 0;
+
size_t psyms_count = 0;
for (const auto &per_cu : per_objfile->per_bfd->all_comp_units)
{
@@ -1312,6 +1315,41 @@ write_gdbindex_1 (FILE *out_file,
assert_file_size (out_file, total_len);
}
+/* Write the contents of the internal "cooked" index. */
+
+static void
+write_cooked_index (dwarf2_per_objfile *per_objfile,
+ const cu_index_map &cu_index_htab,
+ struct mapped_symtab *symtab)
+{
+ gdb_assert (per_objfile->per_bfd->using_index);
+
+ for (const cooked_index_entry *entry
+ : per_objfile->per_bfd->cooked_index_table->all_entries ())
+ {
+ const auto it = cu_index_htab.find (entry->per_cu);
+ gdb_assert (it != cu_index_htab.cend ());
+
+ const char *name = entry->full_name (&symtab->m_string_obstack);
+
+ gdb_index_symbol_kind kind;
+ if (entry->tag == DW_TAG_subprogram)
+ kind = GDB_INDEX_SYMBOL_KIND_FUNCTION;
+ else if (entry->tag == DW_TAG_variable
+ || entry->tag == DW_TAG_constant
+ || entry->tag == DW_TAG_enumerator)
+ kind = GDB_INDEX_SYMBOL_KIND_VARIABLE;
+ else if (entry->tag == DW_TAG_module
+ || entry->tag == DW_TAG_common_block)
+ kind = GDB_INDEX_SYMBOL_KIND_OTHER;
+ else
+ kind = GDB_INDEX_SYMBOL_KIND_TYPE;
+
+ add_index_entry (symtab, name, (entry->flags & IS_STATIC) != 0,
+ kind, it->second);
+ }
+}
+
/* Write contents of a .gdb_index section for OBJFILE into OUT_FILE.
If OBJFILE has an associated dwz file, write contents of a .gdb_index
section for that dwz file into DWZ_OUT_FILE. If OBJFILE does not have an
@@ -1348,7 +1386,9 @@ write_gdbindex (dwarf2_per_objfile *per_objfile, FILE *out_file,
{
dwarf2_per_cu_data *per_cu
= per_objfile->per_bfd->all_comp_units[i].get ();
- partial_symtab *psymtab = per_cu->v.psymtab;
+ partial_symtab *psymtab = (per_objfile->per_bfd->using_index
+ ? nullptr
+ : per_cu->v.psymtab);
int &this_counter = per_cu->is_debug_types ? types_counter : counter;
@@ -1357,7 +1397,10 @@ write_gdbindex (dwarf2_per_objfile *per_objfile, FILE *out_file,
if (psymtab->user == NULL)
recursively_write_psymbols (objfile, psymtab, &symtab,
psyms_seen, this_counter);
+ }
+ if (psymtab != NULL || per_objfile->per_bfd->using_index)
+ {
const auto insertpair = cu_index_htab.emplace (per_cu,
this_counter);
gdb_assert (insertpair.second);
@@ -1385,6 +1428,9 @@ write_gdbindex (dwarf2_per_objfile *per_objfile, FILE *out_file,
++this_counter;
}
+ if (per_objfile->per_bfd->using_index)
+ write_cooked_index (per_objfile, cu_index_htab, &symtab);
+
/* Dump the address map. */
data_buf addr_vec;
if (per_objfile->per_bfd->using_index)
@@ -1396,8 +1442,7 @@ write_gdbindex (dwarf2_per_objfile *per_objfile, FILE *out_file,
}
else
write_address_map (per_objfile->per_bfd->partial_symtabs->psymtabs_addrmap,
- addr_vec, cu_index_htab,
- per_objfile->per_bfd->using_index);
+ addr_vec, cu_index_htab, false);
/* Now that we've processed all symbols we can shrink their cu_indices
lists. */
@@ -1604,15 +1649,17 @@ write_dwarf_index (dwarf2_per_objfile *per_objfile, const char *dir,
dwarf2_per_bfd *per_bfd = per_objfile->per_bfd;
struct objfile *objfile = per_objfile->objfile;
- if (per_objfile->per_bfd->using_index)
+ if (per_objfile->per_bfd->using_index
+ && per_objfile->per_bfd->cooked_index_table == nullptr)
error (_("Cannot use an index to create the index"));
if (per_objfile->per_bfd->types.size () > 1)
error (_("Cannot make an index when the file has multiple .debug_types sections"));
- if (per_bfd->partial_symtabs == nullptr
- || !per_bfd->partial_symtabs->psymtabs
- || !per_bfd->partial_symtabs->psymtabs_addrmap)
+ if ((per_bfd->partial_symtabs == nullptr
+ || !per_bfd->partial_symtabs->psymtabs
+ || !per_bfd->partial_symtabs->psymtabs_addrmap)
+ && per_bfd->cooked_index_table == nullptr)
return;
struct stat st;
diff --git a/gdb/testsuite/gdb.dwarf2/gdb-index.exp b/gdb/testsuite/gdb.dwarf2/gdb-index.exp
index 0b7adb5379d..19b47907dee 100644
--- a/gdb/testsuite/gdb.dwarf2/gdb-index.exp
+++ b/gdb/testsuite/gdb.dwarf2/gdb-index.exp
@@ -90,12 +90,15 @@ gdb_test_multiple "mt print objfiles ${testfile}" $test {
-re "debug_names.*${gdb_prompt} $" {
set binfile_with_index $binfile
}
- -re "Psymtabs.*${gdb_prompt} $" {
+ -re "(Psymtabs|Cooked).*${gdb_prompt} $" {
set binfile_with_index [local_add_gdb_index $binfile]
if { ${binfile_with_index} == "" } {
return -1
}
}
+ -re ".*${gdb_prompt} $" {
+ fail "unrecognized symbol reader"
+ }
}
# Ok, we have a copy of $binfile with an index.
--
2.31.1
next prev parent reply other threads:[~2021-08-26 2:20 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-26 2:19 [PATCH 00/30] Rewrite the DWARF "partial" reader Tom Tromey
2021-08-26 2:19 ` [PATCH 01/30] Introduce make_unique_xstrndup Tom Tromey
2021-08-26 2:19 ` [PATCH 02/30] Split create_addrmap_from_aranges Tom Tromey
2021-08-26 2:19 ` [PATCH 03/30] Add dwarf2_per_cu_data::addresses_seen Tom Tromey
2021-08-26 2:19 ` [PATCH 04/30] Refactor dwarf2_get_pc_bounds Tom Tromey
2021-08-26 2:19 ` [PATCH 05/30] Allow ada_decode not to decode operators Tom Tromey
2021-08-26 2:19 ` [PATCH 06/30] Let skip_one_die not skip children Tom Tromey
2021-08-26 2:19 ` [PATCH 07/30] Add name splitting Tom Tromey
2021-08-26 2:19 ` [PATCH 08/30] Add new overload of dwarf5_djb_hash Tom Tromey
2021-08-26 2:19 ` [PATCH 09/30] Refactor build_type_psymtabs_reader Tom Tromey
2021-08-26 2:19 ` [PATCH 10/30] Add batching parameter to parallel_for_each Tom Tromey
2021-08-26 2:19 ` [PATCH 11/30] Return vector of results from parallel_for_each Tom Tromey
2021-08-27 6:20 ` Tom de Vries
2021-08-28 19:20 ` Tom Tromey
2021-08-26 2:19 ` [PATCH 12/30] Introduce DWARF abbrev cache Tom Tromey
2021-08-26 2:19 ` [PATCH 13/30] Statically examine abbrev properties Tom Tromey
2021-09-06 22:31 ` Lancelot SIX
2021-11-04 18:00 ` Tom Tromey
2021-08-26 2:19 ` [PATCH 14/30] Update skip_one_die for new " Tom Tromey
2021-08-26 2:19 ` [PATCH 15/30] Introduce the new DWARF index class Tom Tromey
2021-09-09 23:32 ` Lancelot SIX
2021-11-04 18:03 ` Tom Tromey
2021-08-26 2:19 ` [PATCH 16/30] The new DWARF indexer Tom Tromey
2021-08-26 2:19 ` [PATCH 17/30] Implement quick_symbol_functions for cooked DWARF index Tom Tromey
2021-08-26 2:19 ` [PATCH 18/30] Wire in the new DWARF indexer Tom Tromey
2021-08-26 2:19 ` [PATCH 19/30] Pre-read DWARF section data Tom Tromey
2021-08-26 2:19 ` [PATCH 20/30] Parallelize DWARF indexing Tom Tromey
2021-08-26 2:19 ` [PATCH 21/30] "Finalize" the DWARF index in the background Tom Tromey
2021-08-26 2:19 ` [PATCH 22/30] Rename write_psymtabs_to_index Tom Tromey
2021-08-26 2:19 ` [PATCH 23/30] Change the key type in psym_index_map Tom Tromey
2021-08-26 2:19 ` [PATCH 24/30] Change parameters to write_address_map Tom Tromey
2021-08-26 2:19 ` [PATCH 25/30] Genericize addrmap handling in the DWARF index writer Tom Tromey
2021-08-26 2:19 ` Tom Tromey [this message]
2021-08-26 2:19 ` [PATCH 27/30] Adapt .debug_names writer to new DWARF scanner Tom Tromey
2021-08-26 2:19 ` [PATCH 28/30] Enable the new DWARF indexer Tom Tromey
2021-08-26 2:19 ` [PATCH 29/30] Delete DWARF psymtab code Tom Tromey
2021-08-26 2:19 ` [PATCH 30/30] Remove dwarf2_per_cu_data::v Tom Tromey
2021-08-26 20:32 ` [PATCH 00/30] Rewrite the DWARF "partial" reader Tom de Vries
2021-08-26 21:29 ` Tom Tromey
2021-08-27 7:31 ` Tom de Vries
2021-08-30 15:04 ` Tom Tromey
2021-09-06 19:46 ` Tom Tromey
2021-09-07 10:58 ` Tom de Vries
2021-09-07 12:16 ` Tom de Vries
2021-10-29 23:06 ` Tom Tromey
2021-09-09 19:00 ` Wei-min Pan
2021-09-11 21:08 ` Tom Tromey
2021-09-13 16:50 ` Weimin Pan
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