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Message-ID: <20190306143048.GB26605@port70.net>
Date: Wed, 6 Mar 2019 15:30:48 +0100
From: Szabolcs Nagy <nsz@...t70.net>
To: musl@...ts.openwall.com
Cc: Ray <i@...kray.me>
Subject: Re: [PATCH] resolve DT_RELR packed relative relocations
* Ray <i@...kray.me> [2019-03-06 13:14:17 +0000]:
> --- a/include/elf.h
> +++ b/include/elf.h
> @@ -384,7 +384,8 @@ typedef struct {
> #define SHT_PREINIT_ARRAY 16
> #define SHT_GROUP 17
> #define SHT_SYMTAB_SHNDX 18
> -#define SHT_NUM 19
> +#define SHT_RELR 19
> +#define SHT_NUM 20
> #define SHT_LOOS 0x60000000
> #define SHT_GNU_ATTRIBUTES 0x6ffffff5
> #define SHT_GNU_HASH 0x6ffffff6
> @@ -744,7 +745,10 @@ typedef struct {
> #define DT_PREINIT_ARRAY 32
> #define DT_PREINIT_ARRAYSZ 33
> #define DT_SYMTAB_SHNDX 34
> -#define DT_NUM 35
> +#define DT_RELRSZ 35
> +#define DT_RELR 36
> +#define DT_RELRENT 37
> +#define DT_NUM 38
> #define DT_LOOS 0x6000000d
> #define DT_HIOS 0x6ffff000
> #define DT_LOPROC 0x70000000
if these are really generic elf things (instead of
os specific) then i don't see how lld can implement
this before the numbers are allocated in the gabi.
the last gabi change was in 2013
http://www.sco.com/developers/gabi/latest/revision.html
and currently its status is unclear, see discussions at
https://groups.google.com/forum/#!msg/generic-abi/XsQpUE6s02o/6rJd339BEAAJ
i think we do want a document instead of a mailing list
post to avoid conflicts. but it is a bit tricky since
the copyright owner is not interested maintaining it.
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