Differential D50224

libc: Reassociate pointer arithmetic in __libc_tls_get_addr
ClosedPublic
Actions

Authored by jrtc27 on Wed, May 7, 2:59 AM.

Tags

None

Referenced Files

	Unknown Object (File)
	Tue, May 13, 6:38 AM

	Unknown Object (File)
	Sat, May 10, 9:32 PM

	Unknown Object (File)
	Fri, May 9, 12:49 PM

	Unknown Object (File)
	Fri, May 9, 11:36 AM

	Unknown Object (File)
	Thu, May 8, 10:17 PM

	Unknown Object (File)
	Thu, May 8, 6:54 PM

	Unknown Object (File)
	Wed, May 7, 9:00 PM

Subscribers

Details

Reviewers

Commits

rG7953cbaabe7c: libc: Reassociate pointer arithmetic in __libc_tls_get_addr

Summary

Rather than compute a biased pointer only to then un-bias it again, un-bias
the offset before adding it to the DTV entry.

This mirrors rtld-elf commit d71c97026366 ("rtld-elf: Push
TLS_DTV_OFFSET into tls_get_addr_common's arguments")

Diff Detail

Repository

rG FreeBSD src repository

Lint

Lint Not Applicable

Unit

Tests Not Applicable

Event Timeline

jrtc27 created this revision.Wed, May 7, 2:59 AM

Herald added a subscriber: imp. · View Herald TranscriptWed, May 7, 2:59 AM

jrtc27 requested review of this revision.Wed, May 7, 2:59 AM

Harbormaster completed remote builds in B63975: Diff 155021.Wed, May 7, 2:59 AM

jrtc27 added a child revision: D50225: libc: Consistently use uintptr_t for TLS implementation.Wed, May 7, 3:08 AM

kib accepted this revision.Wed, May 7, 4:29 PM

This revision is now accepted and ready to land.Wed, May 7, 4:29 PM

Closed by commit rG7953cbaabe7c: libc: Reassociate pointer arithmetic in __libc_tls_get_addr (authored by jrtc27). · Explain WhyWed, May 7, 7:22 PM

This revision was automatically updated to reflect the committed changes.

jrtc27 added a commit: rG7953cbaabe7c: libc: Reassociate pointer arithmetic in __libc_tls_get_addr.

Revision Contents
Changeset List

Path

Size

lib/

libc/

gen/

4 lines

Diff 155076

lib/libc/gen/tls.c

Loading...