Re: Comparing PROT_EXEC-only pages on different CPUs

[Richard Henderson]

On Thu, Jul 01, 2004 at 11:40:16PM +0100, Jamie Lokier wrote:
> Richard raises an interesting point: exec-only pages are useless if
> the code needs to read jump tables and constant pools.  It seems very
> likely Alpha and IA64 have these.

Only if the processor is crippled enough that mixing jump tables and
constant pools in the same pages as code is considered reasonable.
Anyway, that's a strawman -- it's the toolchain's job to get the bits
on the pt_load segments correct.

If the pt_load segment or the mmap prot argument says execute-only,
then you should honor it.



r~
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