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The patch:
From f0d556d14b1d1c3f8e2f9c13b08adca22e1b8c9c Mon Sep 17 00:00:00 2001
From: Tom de Vries <tdevries@suse.de>
Date: Wed, 17 Apr 2024 12:55:00 +0200
Subject: [PATCH] [gdb/testsuite] Fix end_sequence addresses
I noticed in test-case gdb.reverse/map-to-same-line.exp, that the end of main:
...
00000000004102c4 <end_of_sequence>:
4102c4: 52800000 mov w0, #0x0 // #0
4102c8: 9100c3ff add sp, sp, #0x30
4102cc: d65f03c0 ret
...
is not described by the line table:
...
<snip>
The regression failure on PowerPC is due to the change in file
dw2-lines.exp,
- DW_LNE_set_address bar_label_5
+ DW_LNE_set_address "$main_start + $main_len"
The label bar_label_5 is in function bar, not function main. The new
set address should have been $bar_start + $bar_len.
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In certain cases we were calculating the jump displacement incorrectly
when deciding whether to relax a branch. This meant for some branches,
such as a very long backwards conditional branch, relaxation was not
done when it should have been. The result was to error later, because
the actual jump displacement was too large to fit in the original
instruction.
This patch fixes up the displacement calculation so that those branches
are correctly relaxed and no longer result in an error. In addition, it
changes md_convert_frag to install fixups for the JAL instructions in
the resulting relaxations rather than encoding the displacement value
directly.
gas/
* config/tc-bpf.c (relaxed_branch_length): Correct displacement
calculation when relaxing.
(md_convert_frag): Likewise. Install fixups for JAL
instructions resulting from relaxation.
* testsuite/gas/bpf/jump-relax-ja-be.d: Correct and expand test.
* testsuite/gas/bpf/jump-relax-ja.d: Likewise.
* testsuite/gas/bpf/jump-relax-ja.s: Likewise.
* testsuite/gas/bpf/jump-relax-jump-be.d: Likewise.
* testsuite/gas/bpf/jump-relax-jump.d: Likewise.
* testsuite/gas/bpf/jump-relax-jump.s: Likewise.
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Add type annotations to ada-unicode.py, just enough to make pyright
happy:
$ pyright --version
pyright 1.1.359
$ pyright ada-unicode.py
0 errors, 0 warnings, 0 informations
Introduce a `Range` class instead of using separate variables and
tuples, to make the code and type annotations a bit cleaner.
When running ada-unicode.py, I get a diff for ada-casefold.h, but I get
the same diff before and after this patch, so that is a separate issue.
Change-Id: I0d8975a57f9fb115703178ae197dc6b6b8b4eb7a
Approved-By: Tom Tromey <tom@tromey.com>
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Most files including gdbcmd.h currently rely on it to access things
actually declared in cli/cli-cmds.h (setlist, showlist, etc). To make
things easy, replace all includes of gdbcmd.h with includes of
cli/cli-cmds.h. This might lead to some unused includes of
cli/cli-cmds.h, but it's harmless, and much faster than going through
the 170 or so files by hand.
Change-Id: I11f884d4d616c12c05f395c98bbc2892950fb00f
Approved-By: Tom Tromey <tom@tromey.com>
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They are defined in cli/cli-style.c.
Change-Id: Ic478a3985ff0fd773bd7ba85bb144c6e914d0be6
Approved-By: Tom Tromey <tom@tromey.com>
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There is no corresponding definition for print_command_line.
There is already a declaration for print_command_lines in
cli/cli-script.h (the implementation is in cli/cli-script.c).
Change-Id: Ic9e67ed04703306d614383ead14e2b2b059b2a8e
Approved-By: Tom Tromey <tom@tromey.com>
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These functions are implemented in top.c, move their declarations to
top.h.
Change-Id: I8893ef91d955156a6530734fefe8002d78c3e5fc
Approved-By: Tom Tromey <tom@tromey.com>
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Gas should not emit ADD/SUB relocation pairs for label differences
if they are in the same section without code flag even relax enabled.
Because the real value is not be affected by relaxation and it can be
compute out in assembly stage. Thus, correct the `TC_FORCE_RELOCATION
_SUB_SAME` and the label differences in same section without code
flag can be resolved in fixup_segment().
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Absolute address symbols cannot be used with -shared.
We output more information to the user than just BFD_ASSETR.
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When scanning relocations and determining whether TLS type transition is
possible, it will try to obtain the symbol got type. If the symbol got
type record has not yet been allocated space and initialized, it will
cause ld to crash. So when uninitialized, the symbol is set to GOT_UNKNOWN.
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Factor the test for libc debug info out of gdb.base/relativedebug.exp to
a new procedure.
Also, change the "info sharedlibrary" test to explicitly detect when
libc has debug info.
Approved-by: Kevin Buettner <kevinb@redhat.com>
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The 'PacketSize' attribute of the qSupported packet was
documented to be the maximum size of the packet including
the frame and checksum bytes, however this is not how it
was treated in the code. In reality, PacketSize is the
maximum size of the data in the RSP packets, not including
the framing or checksum bytes.
For instance, GDB's remote.c treats it as the maximum
number of data bytes. See remote_read_bytes_1, where the
size of the request is capped at PacketSize/2 (for
hex-encoding).
Also see gdbserver's server.cc, where the internal buffer
is sized as PBUFSIZ and PBUFSIZ-1 is used as PacketSize.
In gdbserver's case, the buffer is not used for any of the
framing or checksum characters. (I am not certain where the -1
comes from. I think it comes from back when there were no
binary packets, so packets were treated as strings with
null terminators).
It also seems like gdbservers in the wild treat it in
this way:
Embocosm doc:
https://www.embecosm.com/appnotes/ean4/embecosm-howto-rsp-server-ean4-issue-2.html#id3078000
A quick glance over openocd's gdb_server.c gdb_put_packet_inner()
function shows that the internal buffer also excludes the framing
and checksum.
Likewise, qEmu's gdbstub.c allocates PacketSize bytes for
the internal packet contents, and PacketSize+4 for the
full frame.
Reviewed-By: Eli Zaretskii <eliz@gnu.org>
Approved-By: Pedro Alves <pedro@palves.net>
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Consider the following test-case:
...
$ cat hello.c
int main()
{
printf("hello ");
#include "world.inc"
$ cat world.inc
printf("world\n");
return 0;
}
$ gcc -g hello.c
...
The line table for the compilation unit, consisting just of
function main, is translated into these two gdb line tables, one for hello.c
and one for world.inc:
...
compunit_symtab: hello.c
symtab: hello.c
INDEX LINE REL-ADDRESS UNREL-ADDRESS IS-STMT PROLOGUE-END EPILOGUE-BEGIN
0 3 0x400557 0x400557 Y
1 4 0x40055b 0x40055b Y
2 END 0x40056a 0x40056a Y
compunit_symtab: hello.c
symtab: world.inc
INDEX LINE REL-ADDRESS UNREL-ADDRESS IS-STMT PROLOGUE-END EPILOGUE-BEGIN
0 1 0x40056a 0x40056a Y
1 2 0x400574 0x400574 Y
2 3 0x400579 0x400579 Y
3 END 0x40057b 0x40057b Y
...
The epilogue of main starts at 0x400579:
...
400579: 5d pop %rbp
40057a: c3 ret
...
Now, say we have an epilogue_begin marker in the line table at 0x400579.
We won't find it using find_epilogue_using_linetable, because it does:
...
const struct symtab_and_line sal = find_pc_line (start_pc, 0);
...
which gets us the line table for hello.c.
Fix this by using "find_pc_line (end_pc - 1, 0)" instead.
Tested on x86_64-linux.
Co-Authored-By: Tom de Vries <tdevries@suse.de>
PR symtab/31622
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=31622
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An out of bounds array access in find_epilogue_using_linetable causes random
test failures like these:
FAIL: gdb.base/unwind-on-each-insn-amd64.exp: foo: instruction 6: $fba_value == $fn_fba
FAIL: gdb.base/unwind-on-each-insn-amd64.exp: foo: instruction 6: check frame-id matches
FAIL: gdb.base/unwind-on-each-insn-amd64.exp: foo: instruction 6: bt 2
FAIL: gdb.base/unwind-on-each-insn-amd64.exp: foo: instruction 6: up
FAIL: gdb.base/unwind-on-each-insn-amd64.exp: foo: instruction 6: $sp_value == $::main_sp
FAIL: gdb.base/unwind-on-each-insn-amd64.exp: foo: instruction 6: $fba_value == $::main_fba
FAIL: gdb.base/unwind-on-each-insn-amd64.exp: foo: instruction 6: [string equal $fid $::main_fid]
Here the read happens below the first element of the line
table, and the test failure depends on the value that is
read from there.
It also happens that std::lower_bound returns a pointer exactly at the upper
bound of the line table, also here the read value is undefined, that happens
in this test:
FAIL: gdb.dwarf2/dw2-epilogue-begin.exp: confirm watchpoint doesn't trigger
Fixes: 528b729be1a2 ("gdb/dwarf2: Add support for DW_LNS_set_epilogue_begin in line-table")
Co-Authored-By: Tom de Vries <tdevries@suse.de>
PR symtab/31268
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=31268
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With test-case gdb.threads/threadcrash.exp using host board local-remote-host
and target board remote-gdbserver-on-localhost I run into:
...
(gdb) PASS: gdb.threads/threadcrash.exp: test_gcore: continue to crash
gcore $outputs/gdb.threads/threadcrash/threadcrash.gcore^M
Failed to open '$outputs/gdb.threads/threadcrash/threadcrash.gcore' for output.^M
(gdb) FAIL: gdb.threads/threadcrash.exp: test_gcore: saving gcore
UNSUPPORTED: gdb.threads/threadcrash.exp: test_gcore: couldn't generate gcore file
...
The problem is that the gcore command tries to save a file on a remote host,
but the filename is a location on build.
Fix this by using host_standard_output_file.
Tested on x86_64-linux.
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After installing glibc debuginfo, I ran into:
...
FAIL: gdb.threads/threadcrash.exp: test_live_inferior: \
$thread_count == [llength $test_list]
...
This happens because the clause:
...
-re "^\r\n${hs}main$hs$eol" {
...
which is intended to match only:
...
#1 <hex> in main () at threadcrash.c:423^M
...
also matches "remaining" in:
...
#1 <hex> in __GI___nanosleep (requested_time=<hex>, remaining=<hex>) at \
nanosleep.c:27^M
...
Fix this by checking for "in main" instead.
Tested on x86_64-linux.
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relocated
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When building on a system where "phony iconv" is used (NetBSD in this
case, not sure why), I get:
CXX charset.o
/home/smarchi/src/binutils-gdb/gdb/charset.c: In function 'size_t phony_iconv(int, const char**, size_t*, char**, size_t*)':
/home/smarchi/src/binutils-gdb/gdb/charset.c:140:8: error: 'extract_unsigned_integer' was not declared in this scope
= extract_unsigned_integer ((const gdb_byte *)*inbuf, 4, endian);
^~~~~~~~~~~~~~~~~~~~~~~~
/home/smarchi/src/binutils-gdb/gdb/charset.c:140:8: note: suggested alternative: 'btrace_insn_number'
= extract_unsigned_integer ((const gdb_byte *)*inbuf, 4, endian);
^~~~~~~~~~~~~~~~~~~~~~~~
btrace_insn_number
Add the necessary include.
Change-Id: I10b967584645961c86167a8395d88929a42bef03
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I'm retiring from IBM, and Geoff hasn't been active for a very long
time.
* MAINTAINERS (ppc): Remove myself and Geoff Keating. Add
Geoff to past maintainers.
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* testsuite/libctf-regression/gzrewrite.c (main): Don't overflow
"a" buffer in "after adding types" check.
* testsuite/libctf-regression/zrewrite.c (main): Likewise.
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The contents of these files was copied from defs.h and findvar. Copy
over the copyright years (1986-2024).
Change-Id: Idfb0f255fbcfda7e107e9a82804cece3d81ed5fc
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PR ld/31652
* elf-vxworks.c (elf_vxworks_emit_relocs): Drop duplicate word.
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Use long with bfd_copy_private_symbol_data to fix
.../binutils/objcopy.c: In
function ‘copy_object’:
.../binutils/objcopy.c:3383:17: error: comparison of integer expressions of different signedness: ‘unsigned int’ and ‘long int’ [-Werror=sign-compare]
3383 | for (i = 0; i < symcount; i++)
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on 32-bit hosts.
PR binutils/14493
* objcopy.c (copy_object): Use long with
bfd_copy_private_symbol_data.
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Move it out of defs.h, the corresponding definition is in symfile.c.
Change-Id: I984666c3bcd213f8574e9ec91462e1d61f77f16b
Approved-By: Tom Tromey <tom@tromey.com>
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It is unused.
Change-Id: Ic49a3ef03c21b209594cd567ae80b5441606bef6
Approved-By: Tom Tromey <tom@tromey.com>
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The declaration of annotation_level is currently in defs.h, while the
definition is in stack.c. I don't really understand why that variable
would live in stack.c, it seems completely unrelated. Move it to
annotate.c, and move the declaration to annotate.h.
Change-Id: I6cf8e9bd20e83959bdf5ad58dd008b6e1187d7d8
Approved-By: Tom Tromey <tom@tromey.com>
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Move some declarations related to the "quit" machinery from defs.h to
event-top.h. Most of the definitions associated to these declarations
are in event-top.c. The exceptions are `quit()` and `maybe_quit()`,
that are defined in utils.c. For consistency, move these two
definitions to event-top.c.
Include "event-top.h" in many files that use these things.
Change-Id: I6594f6df9047a9a480e7b9934275d186afb14378
Approved-By: Tom Tromey <tom@tromey.com>
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Change-Id: I7dc5189ee172e82ef5b2c4a739c011f43a84258b
Approved-By: Tom Tromey <tom@tromey.com>
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Change the return type of the check_quit_flag function to bool. Update
a few related spots.
Change-Id: I9d3a15d3f8651efb02c7d211f06222a592bd4184
Approved-By: Tom Tromey <tom@tromey.com>
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Move them out of defs.h, to extension.h, since the implementations are
in extension.c.
Change-Id: Ie7321468bd7fecc684d70b09f72c3ee8ac75d8f4
Approved-By: Tom Tromey <tom@tromey.com>
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Remove the gdbcmd.h, which is reported as unused by clangd. Add
cli/cli-cmds.h instead, to get access to `cmdlist` and friends.
Change-Id: Ic0c60d2f6d3618f1bd9fd80b95ffd7c33c692a04
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When building with this clang:
$ c++ --version
FreeBSD clang version 16.0.6 (https://github.com/llvm/llvm-project.git llvmorg-16.0.6-0-g7cbf1a259152)
I see:
$ gmake
CXX dwarf2/read.o
/home/smarchi/src/binutils-gdb/gdb/dwarf2/read.c:4890:6: error: moving a temporary object prevents copy elision [-Werror,-Wpessimizing-move]
std::move (thread_storage.release_parent_map ()));
^
/home/smarchi/src/binutils-gdb/gdb/dwarf2/read.c:4890:6: note: remove std::move call here
std::move (thread_storage.release_parent_map ()));
^~~~~~~~~~~ ~
The compiler seems right, there is not need to std::move the result of
`release_parent_map ()`, it's already going to be an rvalue. Remove the
std::move.
The issue isn't FreeBSD-specific, I see it on Linux as well when
building hwith clang, I just noticed it on a FreeBSD build first.
Change-Id: I7aa20a4db56c799f20d838ad08099a01653bba19
Approved-By: Tom Tromey <tom@tromey.com>
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Run `pre-commit autoupdate`, this is the outcome. There is no change in
formatting of Python files.
Change-Id: I977781fa6cc924c398cc3b9d9954dc0fbb95d082
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Using want_p_paddr_set_to_zero in commit 45d92439aebd was wrong. Even
solaris targets don't have want_p_paddr_set_to_zero, but we should
handle them at least somewhat reasonably.
PR 31667
* elf.c (IS_SECTION_IN_INPUT_SEGMENT): Remove bed arg, add
paddr_valid. Don't use bed->want_p_paddr_set_to_zero.
(INCLUDE_SECTION_IN_SEGMENT): Likewise.
(rewrite_elf_program_header): Adjust to suit.
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The reason behind this patch was noticing that generic ELF targets
fail to remove "bar" in the recently committed ld-elf/undefweak-1
test. (Despite that, those targets pass the test due to it being too
strict when matching symbols. "bar" gets turned into a local weak
defined absolute symbol.)
swap_out_syms currently drops local section syms that are defined in
discarded sections. Extend that to also drop other symbols in
discarded sections too, even global symbols. The linker goes to quite
a lot of effort to ensure globals in discarded section take a
definition from the kept linkonce or comdat group section. So the
global sym change should only affect cases where something is quite
wrong about the set of linkonce or comdat group sections. However
that change to elf_map_symbols meant we dropped _DYNAMIC_LINK /
_DYNAMIC_LINKING for mips, a global absolute symbol given STT_SECTION
type for some reason. That problem is fixed by reverting the pr14493
change which is no longer needed due to a) BSF_SECTION_SYM_USED on
x86, and b) fixing objcopy to use copy_private_symbol_data.
bfd/
PR 14493
* elf.c (ignore_sym): Rename from ignore_section_sym. Return
true for any symbol without a section or in a discarded section.
Revert pr14493 change.
(elf_map_symbols): Tidy. Use ignore_sym on all symbols.
(swap_out_syms): Tidy.
ld/
* testsuite/ld-elf/undefweak-1.rd: Match any "bar".
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".set" has a different meaning on alpha. Changing it to ".equ" runs
into ".equ" having a different meaning on hppa, and changing it to "="
runs into trouble on bfin.
* testsuite/ld-elf/elf.exp (undefweak-1): xfail on alpha,
don't xfail for genelf.
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osympp appearing twice here is not a bug.
PR 14493
* objcopy.c (copy_object): Run the symbols through
bfd_copy_private_symbol_data.
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bfd_copy_private_symbol_data is a bfd function that appeared in
commit 89665c8562da a long time ago, but seemingly wasn't used
anywhere until Jan added it to gas/symbols.c in commit 6a2b6326c21e.
The function is used to modify ELF symbol st_shndx for symbols defined
in odd sections like .symtab, so that they get the corresponding
section st_shndx in an output file. This patch fixes some bitrot in
the function. After commit c03551323c04 which introduced
output_elf_obj_tdata, elf_strtab_sec and elf_shstrtab_sec will
segfault if used on an input bfd.
PR 14493
* elf.c (_bfd_elf_copy_private_symbol_data): Don't use
elf_strtab_sec and elf_shstrtab_sec.
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Nothing in defs.h actually uses this. Everything that I (and the
buildbot) can compile still compiles, so I guess that all users of
array_view already include it one way or another. Worst case, if this
causes some build failure, the fix will be one #include away.
Change-Id: I981be98b0653cc18c929d85e9afd8732332efd15
Approved-By: John Baldwin <jhb@FreeBSD.org>
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Nothing in defs.h actually uses this.
Add some includes for some spots using things from hashtab.h. Note that
if the GDB build doesn't use libxxhash, hashtab.h is included by
gdbsupport/common-utils.h, so all files still see hashtab.h. It puzzled
me for some time why I didn't see build failures in my build (which
didn't use libxxhash) but the buildbot gave build failures (it uses
libxxhash).
Change-Id: I8efd68decdaf579f048941c7537cd689885caa2a
Approved-By: John Baldwin <jhb@FreeBSD.org>
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Move it out of defs.h.
Change-Id: Ie1743d41a57f81667650048563e66073c72230cf
Approved-By: John Baldwin <jhb@FreeBSD.org>
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Move the declarations out of defs.h, and the implementations out of
findvar.c.
I opted for a new file, because this functionality of converting
integers to bytes and vice-versa seems a bit to generic to live in
findvar.c.
Change-Id: I524858fca33901ee2150c582bac16042148d2251
Approved-By: John Baldwin <jhb@FreeBSD.org>
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It is unused.
Change-Id: I5d4091368c4dfc29752b12061e38f1df8353ba74
Approved-By: John Baldwin <jhb@FreeBSD.org>
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Move it out of defs.h, adjust the includes here and there.
Change-Id: I11901fdce55d54f5e51723e123cef154cfb1bbc5
Approved-By: John Baldwin <jhb@FreeBSD.org>
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Move declarations of initialize_progspace and initialize_inferiors to
progspace.h and inferior.h, respectively.
Change-Id: I62292ffda429861b9f27d8c836a56d161dfa548d
Approved-By: John Baldwin <jhb@FreeBSD.org>
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