From: Alan Modra <amodra@gmail.com>
To: Fangrui Song <maskray@google.com>
Cc: Simon Marchi <simon.marchi@polymtl.ca>,
Jan Beulich <jbeulich@suse.com>, Nick Clifton <nickc@redhat.com>,
binutils@sourceware.org, gdb-patches@sourceware.org
Subject: Re: [PATCH v3] binutils, gdb: support zstd compressed debug sections
Date: Mon, 26 Sep 2022 23:00:15 +0930 [thread overview]
Message-ID: <YzGpZ2PtJPeYt33n@squeak.grove.modra.org> (raw)
In-Reply-To: <20220926072027.o6g6f33hximpe7y3@google.com>
On Mon, Sep 26, 2022 at 12:20:27AM -0700, Fangrui Song wrote:
> On 2022-09-26, Alan Modra wrote:
> > Better to avoid the need..
> >
> > binutils/
> > * configure.ac (msgpack): Use "AS_IF" rather than "if".
> > * configure: Regenerate.
> > ld/
> > * configure.ac (jansson): Use "AS_IF" rather than "if".
> > * configure: Regenerate.
> >
>
> Thanks. I've changed the zstd patch to use AS_IF, too.
It probably wasn't necessary inside AC_DEFUN, but won't hurt either.
> BTW: I think the `!= xno` trick for ancient shells is not needed. `!=
> no` is used many times in binutils-gdb.
Quite possibly true nowadays. I'm not going to be the one that
removes them all. :-)
Your patch looks OK to me, apart from a few formatting nits. Here are
two examples:
> @@ -150,9 +163,10 @@ bfd_compress_section_contents (bfd *abfd, sec_ptr sec,
> sec->size = orig_uncompressed_size;
> if (decompress)
> {
> - if (!decompress_contents (uncompressed_buffer
> - + orig_compression_header_size,
> - zlib_size, buffer, buffer_size))
> + if (!decompress_contents (
> + sec->compress_status == DECOMPRESS_SECTION_ZSTD,
> + uncompressed_buffer + orig_compression_header_size,
> + zlib_size, buffer, buffer_size))
> {
> bfd_set_error (bfd_error_bad_value);
> bfd_release (abfd, buffer);
One of the formatting guidelines in
https://www.gnu.org/prep/standards/html_node/Formatting.html#Formatting
talks about emacs indenting of code. The above looks reasonable with
your indenting by hand, but auto-indent will turn it into
if (!decompress_contents (
sec->compress_status == DECOMPRESS_SECTION_ZSTD,
uncompressed_buffer + orig_compression_header_size,
zlib_size, buffer, buffer_size))
lining up function args with the open parenthesis. Inserting a couple
of temporary vars is the nicest solution to keeping line length
manageable.
bool is_z = sec->compress_status == DECOMPRESS_SECTION_ZSTD;
bfd_byte *p = uncompressed_buffer + orig_compression_header_size;
if (!decompress_contents (is_z, p, zlib_size, buffer, buffer_size))
> @@ -569,7 +604,8 @@ bfd_init_section_decompress_status (bfd *abfd, sec_ptr sec)
> sec->compressed_size = sec->size;
> sec->size = uncompressed_size;
> bfd_set_section_alignment (sec, uncompressed_alignment_power);
> - sec->compress_status = DECOMPRESS_SECTION_SIZED;
> + sec->compress_status = ch_type == ELFCOMPRESS_ZSTD ? DECOMPRESS_SECTION_ZSTD
> + : DECOMPRESS_SECTION_ZLIB;
>
> return true;
> }
The same emacs auto-indent will ruin the above. Write
sec->compress_status = (ch_type == ELFCOMPRESS_ZSTD
? DECOMPRESS_SECTION_ZSTD : DECOMPRESS_SECTION_ZLIB);
with unnecessary parentheses to guide indentation.
OK to commit with those things fixed.
--
Alan Modra
Australia Development Lab, IBM
next prev parent reply other threads:[~2022-09-26 13:30 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-23 4:08 Fangrui Song
2022-09-23 14:32 ` Simon Marchi
2022-09-26 5:12 ` Alan Modra
2022-09-26 7:20 ` Fangrui Song
2022-09-26 13:30 ` Alan Modra [this message]
2022-09-26 14:08 ` Simon Marchi
2022-09-27 0:33 ` Alan Modra
2022-09-23 15:45 ` Nick Clifton
2022-09-23 15:58 ` Simon Marchi
2022-09-23 18:20 ` Fangrui Song
2022-09-23 18:57 ` Simon Marchi
2022-09-23 20:34 ` Fangrui Song
2022-09-24 5:43 ` Eli Zaretskii
2022-09-24 6:53 ` Enze Li
2022-09-24 7:13 ` Fangrui Song
2022-09-27 18:06 ` Tom Tromey
2022-09-27 18:08 ` Tom Tromey
2022-09-27 18:53 ` Fangrui Song
2022-09-28 11:52 ` [PATCH] Fix GDB build: ELF support check & -lzstd (was: Re: [PATCH v3] binutils, gdb: support zstd compressed debug sections) Pedro Alves
2022-09-28 19:00 ` Simon Marchi
2022-09-28 19:27 ` Pedro Alves
2022-09-28 19:30 ` Fangrui Song
2022-09-29 18:30 ` Pedro Alves
2022-09-29 11:43 ` [PATCH v3] binutils, gdb: support zstd compressed debug sections Martin Liška
2022-09-29 20:17 ` Fangrui Song
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