On 3/10/21 10:36 AM, Jessica Clarke wrote:
On 10 Mar 2021, at 18:07, Olivier Houchard <[email protected]> wrote:
The branch main has been updated by cognet:
URL:
https://cgit.FreeBSD.org/src/commit/?id=c328f64d81079bad5064c8a387883df50ab5aaed
commit c328f64d81079bad5064c8a387883df50ab5aaed
Author: Olivier Houchard <[email protected]>
AuthorDate: 2021-03-10 18:01:41 +0000
Commit: Olivier Houchard <[email protected]>
CommitDate: 2021-03-10 18:06:42 +0000
arm64: Fix COMPAT_FREEBSD32.
The ENTRY() macro was modified by commit
28d945204ea1014d7de6906af8470ed8b3311335 to add an optional NOP instruction
at the beginning of the function. It is of course an arm64 instruction, so
unsuitable for the 32bits sigcode. So just use EENTRY() instead for
aarch32_sigcode. This should fix receiving signals when running 32bits
binaries on FreeBSD/arm64.
Hmm, that's a good point, does the extra nop for the AArch64 sigcode
cause issues for gdb detecting it?
I think GDB might be ok because the nop comes first as it looks for the
sequence of instructions after the nop to identify the signal frame (it
doesn't care what instructions come before the sequence).
--
John Baldwin
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