rtld: Teach rtld about the BTI elf note
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Authored by andrew on Oct 16 2023, 4:08 PM.

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Reviewers

markj
emaste

Group Reviewers

arm64

Commits

rG5270cc9757fb: rtld: Teach rtld about the BTI elf note

Summary

Add the Branch Target Identification (BTI) note to libc assembly
sources. As all obect files need the note for rtld to have it we need
to insert it in all asm files.

Diff Detail

Repository

rG FreeBSD src repository

Lint

Lint Skipped

Unit

Tests Skipped

Build Status

Buildable 54008
Build 50898: arc lint + arc unit

Event Timeline

andrew created this revision.Oct 16 2023, 4:08 PM

Herald added subscribers: bdragon, emaste, imp. · View Herald TranscriptOct 16 2023, 4:08 PM

andrew requested review of this revision.Oct 16 2023, 4:08 PM

andrew added a parent revision: D42228: libc: Teach libc about the BTI elf note.

andrew added a child revision: D42230: arm64: Add a BTI landing pad to .mcount.

Harbormaster completed remote builds in B54008: Diff 128839.Oct 16 2023, 4:08 PM

markj accepted this revision.Oct 23 2023, 2:05 PM

This revision is now accepted and ready to land.Oct 23 2023, 2:05 PM

emaste accepted this revision.Oct 23 2023, 5:03 PM

Looks like I put the wrong review link in rG5270cc9757fb4e0c1303ec44c2602b75acf3806d

emaste added a commit: rG5270cc9757fb: rtld: Teach rtld about the BTI elf note.Fri, May 17, 4:19 PM

Revision Contents
Changeset List

Path

Size

libexec/

rtld-elf/

aarch64/

rtld_start.S

4 lines

Diff 128839

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libexec/rtld-elf/aarch64/rtld_start.S

rtld: Teach rtld about the BTI elf noteClosedPublicActions