From: Tom Tromey <tom@tromey.com>
To: gdb-patches@sourceware.org
Cc: Tom Tromey <tom@tromey.com>
Subject: [PATCH v4 05/34] Refactor dwarf2_get_pc_bounds
Date: Mon, 4 Apr 2022 13:53:06 -0600 [thread overview]
Message-ID: <20220404195335.2111906-6-tom@tromey.com> (raw)
In-Reply-To: <20220404195335.2111906-1-tom@tromey.com>
This changes dwarf2_get_pc_bounds so that it does not directly access
a psymtab or psymtabs_addrmap. Instead, both the addrmap and the
desired payload are passed as parameters. This makes it suitable to
be used by the new indexer.
---
gdb/dwarf2/read.c | 49 ++++++++++++++++++++++++++++-------------------
1 file changed, 29 insertions(+), 20 deletions(-)
diff --git a/gdb/dwarf2/read.c b/gdb/dwarf2/read.c
index 986db08c986..e24f2747bdb 100644
--- a/gdb/dwarf2/read.c
+++ b/gdb/dwarf2/read.c
@@ -1297,7 +1297,8 @@ enum pc_bounds_kind
static enum pc_bounds_kind dwarf2_get_pc_bounds (struct die_info *,
CORE_ADDR *, CORE_ADDR *,
struct dwarf2_cu *,
- dwarf2_psymtab *);
+ addrmap *,
+ void *);
static void get_scope_pc_bounds (struct die_info *,
CORE_ADDR *, CORE_ADDR *,
@@ -7026,8 +7027,11 @@ process_psymtab_comp_unit_reader (const struct die_reader_specs *reader,
/* Possibly set the default values of LOWPC and HIGHPC from
`DW_AT_ranges'. */
- cu_bounds_kind = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc,
- &best_highpc, cu, pst);
+ cu_bounds_kind
+ = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc,
+ &best_highpc, cu,
+ per_bfd->partial_symtabs->psymtabs_addrmap,
+ pst);
if (cu_bounds_kind == PC_BOUNDS_HIGH_LOW && best_lowpc < best_highpc)
{
CORE_ADDR low
@@ -8147,9 +8151,9 @@ add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc,
scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu);
}
-static int
-dwarf2_ranges_read (unsigned, CORE_ADDR *, CORE_ADDR *, struct dwarf2_cu *,
- dwarf2_psymtab *, dwarf_tag);
+static int dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return,
+ CORE_ADDR *high_return, struct dwarf2_cu *cu,
+ addrmap *map, void *datum, dwarf_tag tag);
/* Read a partial die corresponding to a subprogram or an inlined
subprogram and create a partial symbol for that subprogram.
@@ -8203,6 +8207,9 @@ add_partial_subprogram (struct partial_die_info *pdi,
if (pdi->has_range_info
&& dwarf2_ranges_read (pdi->ranges_offset, &pdi->lowpc, &pdi->highpc,
cu,
+ (set_addrmap
+ ? cu->per_objfile->per_bfd->partial_symtabs->psymtabs_addrmap
+ : nullptr),
set_addrmap ? cu->per_cu->v.psymtab : nullptr,
pdi->tag))
{
@@ -13098,7 +13105,7 @@ read_func_scope (struct die_info *die, struct dwarf2_cu *cu)
}
/* Ignore functions with missing or invalid low and high pc attributes. */
- if (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)
+ if (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, nullptr, nullptr)
<= PC_BOUNDS_INVALID)
{
attr = dwarf2_attr (die, DW_AT_external, cu);
@@ -13271,7 +13278,7 @@ read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu)
as multiple lexical blocks? Handling children in a sane way would
be nasty. Might be easier to properly extend generic blocks to
describe ranges. */
- switch (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL))
+ switch (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, nullptr, nullptr))
{
case PC_BOUNDS_NOT_PRESENT:
/* DW_TAG_lexical_block has no attributes, process its children as if
@@ -13537,7 +13544,8 @@ read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu)
CORE_ADDR lowpc;
/* DW_AT_entry_pc should be preferred. */
- if (dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL)
+ if (dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu,
+ nullptr, nullptr)
<= PC_BOUNDS_INVALID)
complaint (_("DW_AT_call_target target DIE has invalid "
"low pc, for referencing DIE %s [in module %s]"),
@@ -14038,15 +14046,15 @@ dwarf2_ranges_process (unsigned offset, struct dwarf2_cu *cu, dwarf_tag tag,
/* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET.
Return 1 if the attributes are present and valid, otherwise, return 0.
- If RANGES_PST is not NULL we should set up the `psymtabs_addrmap'. */
+ TAG is passed to dwarf2_ranges_process. If MAP is not NULL, then
+ ranges in MAP are set, using DATUM as the value. */
static int
dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return,
CORE_ADDR *high_return, struct dwarf2_cu *cu,
- dwarf2_psymtab *ranges_pst, dwarf_tag tag)
+ addrmap *map, void *datum, dwarf_tag tag)
{
struct objfile *objfile = cu->per_objfile->objfile;
- dwarf2_per_bfd *per_bfd = cu->per_objfile->per_bfd;
struct gdbarch *gdbarch = objfile->arch ();
const CORE_ADDR baseaddr = objfile->text_section_offset ();
int low_set = 0;
@@ -14057,7 +14065,7 @@ dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return,
retval = dwarf2_ranges_process (offset, cu, tag,
[&] (CORE_ADDR range_beginning, CORE_ADDR range_end)
{
- if (ranges_pst != NULL)
+ if (map != nullptr)
{
CORE_ADDR lowpc;
CORE_ADDR highpc;
@@ -14068,8 +14076,7 @@ dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return,
highpc = (gdbarch_adjust_dwarf2_addr (gdbarch,
range_end + baseaddr)
- baseaddr);
- addrmap_set_empty (per_bfd->partial_symtabs->psymtabs_addrmap,
- lowpc, highpc - 1, ranges_pst);
+ addrmap_set_empty (map, lowpc, highpc - 1, datum);
}
/* FIXME: This is recording everything as a low-high
@@ -14126,7 +14133,7 @@ dwarf2_ranges_read_low_addrs (unsigned offset, struct dwarf2_cu *cu,
static enum pc_bounds_kind
dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc,
CORE_ADDR *highpc, struct dwarf2_cu *cu,
- dwarf2_psymtab *pst)
+ addrmap *map, void *datum)
{
dwarf2_per_objfile *per_objfile = cu->per_objfile;
struct attribute *attr;
@@ -14169,8 +14176,8 @@ dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc,
/* Value of the DW_AT_ranges attribute is the offset in the
.debug_ranges section. */
- if (!dwarf2_ranges_read (ranges_offset, &low, &high, cu, pst,
- die->tag))
+ if (!dwarf2_ranges_read (ranges_offset, &low, &high, cu,
+ map, datum, die->tag))
return PC_BOUNDS_INVALID;
/* Found discontinuous range of addresses. */
ret = PC_BOUNDS_RANGES;
@@ -14213,7 +14220,8 @@ dwarf2_get_subprogram_pc_bounds (struct die_info *die,
CORE_ADDR low, high;
struct die_info *child = die->child;
- if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL) >= PC_BOUNDS_RANGES)
+ if (dwarf2_get_pc_bounds (die, &low, &high, cu, nullptr, nullptr)
+ >= PC_BOUNDS_RANGES)
{
*lowpc = std::min (*lowpc, low);
*highpc = std::max (*highpc, high);
@@ -14250,7 +14258,8 @@ get_scope_pc_bounds (struct die_info *die,
CORE_ADDR best_high = (CORE_ADDR) 0;
CORE_ADDR current_low, current_high;
- if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL)
+ if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu,
+ nullptr, nullptr)
>= PC_BOUNDS_RANGES)
{
best_low = current_low;
--
2.34.1
next prev parent reply other threads:[~2022-04-04 19:53 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-04 19:53 [PATCH v4 00/34] Rewrite the DWARF "partial" reader Tom Tromey
2022-04-04 19:53 ` [PATCH v4 01/34] Allow thread-pool.h to work without threads Tom Tromey
2022-04-08 16:13 ` Pedro Alves
2022-04-04 19:53 ` [PATCH v4 02/34] Split create_addrmap_from_aranges Tom Tromey
2022-04-04 19:53 ` [PATCH v4 03/34] Fix latent bug in read_addrmap_from_aranges Tom Tromey
2022-04-04 19:53 ` [PATCH v4 04/34] Add dwarf2_per_cu_data::addresses_seen Tom Tromey
2022-04-04 19:53 ` Tom Tromey [this message]
2022-04-04 19:53 ` [PATCH v4 06/34] Allow ada_decode not to decode operators Tom Tromey
2022-04-04 19:53 ` [PATCH v4 07/34] Let skip_one_die not skip children Tom Tromey
2022-04-04 19:53 ` [PATCH v4 08/34] Add name splitting Tom Tromey
2022-04-04 19:53 ` [PATCH v4 09/34] Add new overload of dwarf5_djb_hash Tom Tromey
2022-04-04 19:53 ` [PATCH v4 10/34] Refactor build_type_psymtabs_reader Tom Tromey
2022-04-04 19:53 ` [PATCH v4 11/34] Add batching parameter to parallel_for_each Tom Tromey
2022-04-04 19:53 ` [PATCH v4 12/34] Return vector of results from parallel_for_each Tom Tromey
2022-04-04 19:53 ` [PATCH v4 13/34] Specialize std::hash for gdb_exception Tom Tromey
2022-04-04 19:53 ` [PATCH v4 14/34] Add "fullname" handling to file_and_directory Tom Tromey
2022-04-04 19:53 ` [PATCH v4 15/34] Introduce DWARF abbrev cache Tom Tromey
2022-04-04 19:53 ` [PATCH v4 16/34] Statically examine abbrev properties Tom Tromey
2022-04-04 19:53 ` [PATCH v4 17/34] Update skip_one_die for new " Tom Tromey
2022-04-04 19:53 ` [PATCH v4 18/34] Introduce the new DWARF index class Tom Tromey
2022-04-10 17:38 ` Tom Tromey
2022-04-14 5:32 ` Enze Li
2022-04-14 11:52 ` Simon Marchi
2022-04-04 19:53 ` [PATCH v4 19/34] The new DWARF indexer Tom Tromey
2022-04-04 19:53 ` [PATCH v4 20/34] Implement quick_symbol_functions for cooked DWARF index Tom Tromey
2022-04-04 19:53 ` [PATCH v4 21/34] Wire in the new DWARF indexer Tom Tromey
2022-04-04 19:53 ` [PATCH v4 22/34] Introduce thread-safe handling for complaints Tom Tromey
2022-04-04 19:53 ` [PATCH v4 23/34] Pre-read DWARF section data Tom Tromey
2022-04-04 19:53 ` [PATCH v4 24/34] Parallelize DWARF indexing Tom Tromey
2022-04-04 19:53 ` [PATCH v4 25/34] "Finalize" the DWARF index in the background Tom Tromey
2022-04-04 19:53 ` [PATCH v4 26/34] Rename write_psymtabs_to_index Tom Tromey
2022-04-04 19:53 ` [PATCH v4 27/34] Change the key type in psym_index_map Tom Tromey
2022-04-04 19:53 ` [PATCH v4 28/34] Change parameters to write_address_map Tom Tromey
2022-04-04 19:53 ` [PATCH v4 29/34] Genericize addrmap handling in the DWARF index writer Tom Tromey
2022-04-04 19:53 ` [PATCH v4 30/34] Adapt .gdb_index writer to new DWARF scanner Tom Tromey
2022-04-04 19:53 ` [PATCH v4 31/34] Adapt .debug_names " Tom Tromey
2022-04-04 19:53 ` [PATCH v4 32/34] Enable the new DWARF indexer Tom Tromey
2022-04-04 19:53 ` [PATCH v4 33/34] Delete DWARF psymtab code Tom Tromey
2022-04-04 19:53 ` [PATCH v4 34/34] Remove dwarf2_per_cu_data::v Tom Tromey
2022-04-12 15:30 ` [PATCH v4 00/34] Rewrite the DWARF "partial" reader Tom Tromey
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