Adds two new external authors to etc/update-copyright.py to cover
bfd/ax_tls.m4, and adds gprofng to dirs handled automatically, then
updates copyright messages as follows:
1) Update cgen/utils.scm emitted copyrights.
2) Run "etc/update-copyright.py --this-year" with an extra external
author I haven't committed, 'Kalray SA.', to cover gas testsuite
files (which should have their copyright message removed).
3) Build with --enable-maintainer-mode --enable-cgen-maint=yes.
4) Check out */po/*.pot which we don't update frequently.
I've reimplemented the .debug_names code in GDB -- it was quite far
from being correct, and the new implementation is much closer to what
is specified by DWARF.
However, the new writer in GDB needs to emit some symbol properties,
so that the reader can be fully functional. This patch adds a few new
DW_IDX_* constants, and tries to document the existing extensions as
well. (My patch series add more documentation of these to the GDB
manual as well.)
2023-12-10 Tom Tromey <tom@tromey.com>
* dwarf2.def (DW_IDX_GNU_internal, DW_IDX_GNU_external): Comment.
(DW_IDX_GNU_main, DW_IDX_GNU_language, DW_IDX_GNU_linkage_name):
New constants.
The newer update-copyright.py fixes file encoding too, removing cr/lf
on binutils/bfdtest2.c and ld/testsuite/ld-cygwin/exe-export.exp, and
embedded cr in binutils/testsuite/binutils-all/ar.exp string match.
Gfortran supports namelists (a Fortran feature); it emits
DW_TAG_namelist and DW_TAG_namelist_item dies. But gdb does not
process these dies and does not support 'print' or 'ptype' commands on
namelist variables.
An attempt to print namelist variables results in gdb bailing out with
the error message as shown below.
(gdb) print nml
No symbol "nml" in current context.
This commit is to make the print and ptype commands work for namelist
variables and its items. Sample output of these commands is shared
below, with fixed gdb.
(gdb) ptype nml
type = Type nml
integer(kind=4) :: a
integer(kind=4) :: b
End Type nml
(gdb) print nml
$1 = ( a = 10, b = 20 )
The result of running etc/update-copyright.py --this-year, fixing all
the files whose mode is changed by the script, plus a build with
--enable-maintainer-mode --enable-cgen-maint=yes, then checking
out */po/*.pot which we don't update frequently.
The copy of cgen was with commit d1dd5fcc38ead reverted as that commit
breaks building of bfp opcodes files.
This adds a get_DW_UT_name function to dwarfnames using dwarf2.def
for use in binutils readelf to show the unit types in a DWARF5 header.
include/ChangeLog:
Sync with GCC
* dwarf2.def: Add DWARF5 Unit type header encoding macros
DW_UT_FIRST, DW_UT and DW_UT_END.
* dwarf2.h (enum dwarf_unit_type): Removed and define using
DW_UT_FIRST, DW_UT and DW_UT_END macros.
(get_DW_UT_name): New function declaration.
libiberty/ChangeLog:
Sync with GCC
* dwarfnames.c (get_DW_UT_name): Define using DW_UT_FIRST, DW_UT
and DW_UT_END.
When dumping location lists, also dump locview lists that may be
interspersed with them, and bring view pairs next to the corresponding
location list entries.
This patch supports DW_AT_GNU_locviews as a separate attribute for
DWARF4- loc_lists and split (dwo) loclists, as well as DWARF5
loclists.
It also supports, in DWARF5 loclists, the proposed
DW_LLE_GNU_view_pair loclist entry type proposed for DWARF6.
The tests use 32-bit DWARF, even on 64-bit targets, resolving offsets
to constants so as to reduce the risk that relocations be created for
them, or that the offsets be rejected as nonconstants.
The patch also adds an xfail to an unrelated test, namely dw5, so that
no unexpected fails remain on nds32*-elf, one of the tested targets.
Reviewed-by: Alan Modra <amodra@gmail.com>
for include/ChangeLog
* dwarf2.def (DW_AT_GNU_locviews): New.
* dwarf2.h (enum dwarf_location_list_entry_type): Add
DW_LLE_GNU_view_pair.
(DW_LLE_view_pair): Define.
for binutils/ChangeLog
* dwarf.h (debug_info): Add loc_views and num_loc_views.
* dwarf.c (vm1): New constant.
(print_dwarf_view): New function.
(read_and_display_attr_value): Support DW_AT_GNU_locviews.
(process_debug_info): Keep num_loc_offsets and num_loc_views
in sync.
(display_view_pair_list): New function.
(display_loc_list_dwo): Take vstart_ptr; update it. Dump
location view pairs before the range they apply to, when a
viewlist augments the loc list.
(display_loc_list): Likewise. Check view numbers in range
tests.
(display_loclists_list): Likewise. Handle view pair entries,
and warn on trailing ones.
(loc_views): New variable.
(loc_offsets_compar): Compare loc_views if loc_offsets are the
same.
(display_debug_loc): Check and sort loc_views too. Accept
loc_view as expected_start. Skip if lists and views are the
same. Dump locview list separately in order, and pass the
locview list base to each list dump function. Warn and skip
overlap and hole checking if we find loclists and locviews to
not be adjacent.
* testsuite/binutils-all/locview-1.s: New.
* testsuite/binutils-all/readelf.locview-1: New.
* testsuite/binutils-all/locview-2.s: New.
* testsuite/binutils-all/readelf.locview-2: New.
* testsuite/binutils-all/readelf.exp: Run new tests. Fix
option spelling in pr18374 fail message. XFAIL dw5 test on
nds32*-elf.
Add a flag field is_noreturn to struct func_type. Make calling_convention
a small bit field to not increase the size of the struct. Set is_noreturn
if the new GCC5/DWARF5 DW_AT_noreturn is set on a DW_TAG_subprogram.
Use this information to warn the user before doing a finish or return from
a function that does not return normally to its caller.
(gdb) finish
warning: Function endless does not return normally.
Try to finish anyway? (y or n)
(gdb) return
warning: Function does not return normally to caller.
Make endless return now? (y or n)
gdb/ChangeLog
* dwarf2read.c (read_subroutine_type): Set TYPE_NO_RETURN from
DW_AT_noreturn.
* gdbtypes.h (struct func_type): Add is_noreturn field flag. Make
calling_convention an 8 bit bit field.
(TYPE_NO_RETURN): New macro.
* infcmd.c (finish_command): Query if function does not return
normally.
* stack.c (return_command): Likewise.
gdb/testsuite/ChangeLog
* gdb.base/noreturn-return.c: New file.
* gdb.base/noreturn-return.exp: New file.
* gdb.base/noreturn-finish.c: New file.
* gdb.base/noreturn-finish.exp: New file.
include/ChangeLog
* dwarf2.def (DW_AT_noreturn): New DWARF5 attribute.
The dwarf2.h addition and the code to emit the new attribute is already in
the gcc tree.
