* hurd: missing some PLT refs?!
@ 2018-06-16 1:13 Samuel Thibault
2018-06-18 11:27 ` Joseph Myers
0 siblings, 1 reply; 2+ messages in thread
From: Samuel Thibault @ 2018-06-16 1:13 UTC (permalink / raw)
To: libc-alpha
Hello,
check-localplt currently emits:
Missing required PLT reference: libc.so: free
Missing required PLT reference: libc.so: malloc
Missing required PLT reference: ld.so: free
but there are PLT references in libc.so, e.g.:
./stdlib/exit.os:
0000017b R_386_PLT32 free
so I don't understand why check-localplt doesn't see them. Any idea?
Samuel
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: hurd: missing some PLT refs?!
2018-06-16 1:13 hurd: missing some PLT refs?! Samuel Thibault
@ 2018-06-18 11:27 ` Joseph Myers
0 siblings, 0 replies; 2+ messages in thread
From: Joseph Myers @ 2018-06-18 11:27 UTC (permalink / raw)
To: Samuel Thibault; +Cc: libc-alpha
On Sat, 16 Jun 2018, Samuel Thibault wrote:
> Hello,
>
> check-localplt currently emits:
>
> Missing required PLT reference: libc.so: free
> Missing required PLT reference: libc.so: malloc
> Missing required PLT reference: ld.so: free
>
> but there are PLT references in libc.so, e.g.:
>
> ./stdlib/exit.os:
> 0000017b R_386_PLT32 free
>
> so I don't understand why check-localplt doesn't see them. Any idea?
Because you end up with a dynamic R_386_GLOB_DAT relocation, so need to
allow for that. See the "+ REL R_386_GLOB_DAT" in
sysdeps/unix/sysv/linux/i386/localplt.data to allow for that (of course,
such annotations naming an architecture-specific relocation require an
architecture-specific localplt.data file, not an OS-specific but
architecture-independent one such as you presently have for Hurd).
--
Joseph S. Myers
joseph@codesourcery.com
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2018-06-16 1:13 hurd: missing some PLT refs?! Samuel Thibault
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