Differential D34595

arm,arm64: Add a NT_ARM_TLS read-only register set.
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Authored by jhb on Mar 17 2022, 10:35 PM.

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markj
andrew
manu

Commits

rGe0b7d19d4408: arm,arm64: Add a NT_ARM_TLS read-only register set.
rGb2cb74c22c4f: arm,arm64: Add a NT_ARM_TLS read-only register set.

Summary

This register set exposes the per-thread TLS register. It matches the
layout used by Linux on arm64. Linux does not implement this note for
32-bit arm.

Sponsored by: University of Cambridge, Google, Inc.

Diff Detail

Repository

rG FreeBSD src repository

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Unit

Tests Not Applicable

Event Timeline

jhb created this revision.Mar 17 2022, 10:35 PM

Herald added a subscriber: imp. · View Herald TranscriptMar 17 2022, 10:35 PM

jhb requested review of this revision.Mar 17 2022, 10:35 PM

Harbormaster completed remote builds in B44817: Diff 103968.Mar 17 2022, 10:35 PM

I'm still testing this with gdb patches. So far it isn't quite working yet on the GDB side, though the core dumps look good to me. (The SD-card I used in my rpi for armv7 also died so I'm waiting for a new sd card to finish testing on 32-bit arm.)

markj accepted this revision.Mar 17 2022, 10:42 PM

markj added inline comments.

sys/arm64/arm64/ptrace_machdep.c
116	Maybe add an explicit cast to ward off static analyzers or compiler warnings.

This revision is now accepted and ready to land.Mar 17 2022, 10:42 PM

jhb added a parent revision: D34448: Use a regset for NT_ARM_VFP..Mar 17 2022, 11:00 PM

andrew accepted this revision.Mar 18 2022, 11:11 AM

jhb marked an inline comment as done.Mar 23 2022, 8:26 PM

Closed by commit rGb2cb74c22c4f: arm,arm64: Add a NT_ARM_TLS read-only register set. (authored by jhb). · Explain WhyMar 23 2022, 8:34 PM

This revision was automatically updated to reflect the committed changes.

jhb added a commit: rGb2cb74c22c4f: arm,arm64: Add a NT_ARM_TLS read-only register set..

jhb added a commit: rGe0b7d19d4408: arm,arm64: Add a NT_ARM_TLS read-only register set..May 13 2022, 5:43 PM

Revision Contents
Changeset List

Path

Size

contrib/

elftoolchain/

readelf/

1 line

sys/

arm/

arm/

ptrace_machdep.c

22 lines

arm64/

arm64/

ptrace_machdep.c

48 lines

sys/

1 line

usr.bin/

gcore/

3 lines

Diff 104131

contrib/elftoolchain/readelf/readelf.c

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sys/arm/arm/ptrace_machdep.c

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sys/arm64/arm64/ptrace_machdep.c

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sys/sys/elf_common.h

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usr.bin/gcore/elfcore.c

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