svn commit: r296428 - head/sys/boot/common

[Dimitry Andric]

On 07 Mar 2016, at 17:28, Warner Losh <imp at bsdimp.com> wrote:
...
> Alternatively, is there a switch to clang 3.8 that says 'Don't generate the new
> relocation, use the old one instead" which would also be safe and allow a
> less-bumpy transition?

On amd64, we actually compile source files for the kernel with
-fno-asynchronous-unwind-tables, which is the flag that ensures object
files do not end up with a .eh_frame section, because the compiler will
refrain from inserting CFI directives into the assembler.

However, this only affects C source files, and we have a number of
hand-written assembler sources in the tree, with CFI directives in them.
These will always result in .eh_frame sections, unless there is another
assembler-specific flag of suppressing that.

-Dimitry

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