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Message-ID: <20220802200126.7mnqo67w7aegtog7@gmail.com>
Date: Tue, 2 Aug 2022 13:01:26 -0700
From: Fangrui Song <i@...kray.me>
To: musl@...ts.openwall.com
Cc: Cary Coutant <ccoutant@...il.com>
Subject: Re: [PATCH] elf.h: add ELFCOMPRESS_ZSTD
On 2022-08-02, Rich Felker wrote:
>On Mon, Jul 25, 2022 at 07:14:33PM -0700, Fangrui Song wrote:
>> see
>>
>> https://groups.google.com/g/generic-abi/c/satyPkuMisk
>> Add new ch_type value: ELFCOMPRESS_ZSTD
>> ---
>> include/elf.h | 1 +
>> 1 file changed, 1 insertion(+)
>>
>> diff --git a/include/elf.h b/include/elf.h
>> index 86e2f0bb..d2231ba0 100644
>> --- a/include/elf.h
>> +++ b/include/elf.h
>> @@ -436,6 +436,7 @@ typedef struct {
>> } Elf64_Chdr;
>>
>> #define ELFCOMPRESS_ZLIB 1
>> +#define ELFCOMPRESS_ZSTD 2
>> #define ELFCOMPRESS_LOOS 0x60000000
>> #define ELFCOMPRESS_HIOS 0x6fffffff
>> #define ELFCOMPRESS_LOPROC 0x70000000
>> --
>> 2.37.1
>
>Is this actually an adopted standard? It's not clear from the link
>above whether there's anything authoritative going on or a proposal
>that some people like.
>
>Rich
I think so, from Cary's https://groups.google.com/g/generic-abi/c/satyPkuMisk/m/KwTF_U8rBAAJ
"I will add this to the ELF spec, as proposed below:".
This question isn't alone. Carlos O'Donell asked on https://sourceware.org/pipermail/libc-alpha/2022-July/141130.html
"Is there a public repo that I can use to cross-check the glibc value with the accepted ELF gABI value?"
Let me summarize the history:
Roughly since 2015 https://groups.google.com/g/generic-abi/c/IakWYdGABjQ/m/7zTiAVveBAAJ
("Heads Up: John Wolfe no longer at Xinuos Inc"), the official generic ABI website
http://www.sco.com/developers/gabi/latest/contents.html no longer gets update. (I believe the last
change was https://groups.google.com/g/generic-abi/c/dBOS1H47Q64/m/jwc9xA9o0IsJ
"Proposed gABI addition: SHF_COMPRESS").
Since https://groups.google.com/g/generic-abi/c/9OO5vhxb00Y/m/Y0WthoOcCQAJ ("Ongoing Maintenance of the gABI"),
Cary Coutant takes on the maintenance of the gABI spec.
At the moment there is no repository. If help is needed, I am happy to convert the
/developers/gabi/latest .html files to Markdown or reST.
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