Adding a MACHINE_ARCH note

[Warner Losh]

On Jul 9, 2013, at 6:40 PM, Adrian Chadd wrote:

> Someone pointed out there's dirty people running 32-bit binaries using
> the 64-bit intel/amd instruction set.
> 
> Is this also able to represent that?


The elf headers represent that.

Warner

> 
> -adrian
> 
> On 9 July 2013 15:48, Andrew Turner <andrew at fubar.geek.nz> wrote:
>> On Tue, 9 Jul 2013 08:19:46 -0600
>> Warner Losh <imp at bsdimp.com> wrote:
>>> I thought that the ELF headers gave us all the data we needed to know
>>> how things were built...
>> 
>> It will tell us if it was for e.g. an ARM or MIPS ELF file, but I'm not
>> sure how we can tell the difference between an arm and an armv6 ELF.
>> 
>> With armv6 there are a few changes in the userland/kernel
>> interface, e.g. reading the thread local storage pointer is different
>> such that an armv6 static binary would not run on an ARMv5 core as it
>> uses newer instructions.
>> 
>> Andrew
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