Diffusion FreeBSD src repository - subversion rS292663

Be stricter on which functions we can probe with FBT. We now only check the
rS292663
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Description

Be stricter on which functions we can probe with FBT. We now only check the
first instruction to see if it's either a pushm with lr, or a sub with sp.
The former is the common case, with the latter used with va_args.

This removes 12 probes. These are all hand-written assembly, with a few C
functions with no stack usage.

Submitted by: Howard Su <howard0su@gmail.com>
Differential Revision: https://reviews.freebsd.org/D4419

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Provenance

andrew

Authored on

Differential Revision

D4419: More restrict on probe function entry. We only check first instruction now. The only expcetion case is when function uses va_args, the first instrction is skipped.

Parents

rS292662: Remove redundant declarations in sys/x86/xen which are now handled in other…

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andrew committed rS292663: Be stricter on which functions we can probe with FBT. We now only check the.Dec 23 2015, 5:54 PM

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head/

sys/

cddl/

dev/

fbt/

arm/

fbt_isa.c

rS292663

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head/sys/cddl/dev/fbt/arm/fbt_isa.c