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From: Damjan Marion <damjan.marion@gmail.com>
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Date: Wed, 22 Jun 2011 15:09:26 +0200
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Subject: ARM issue with old binutils
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Hi,

On my ongoing effort to support clang cross-compiling of world for ARM =
architecture I hit one weird issue:

Problem is that old ARM Architecture Reference Manual (ARMv5) specifies =
mnemonics "mov r0, r0, rrx"=20
while new ARM ARM defines same instruction as "rrx r0,r0".=20

Both have same opcode: 0xe1a00060.

Problem is that clang currently uses GAS to assemble files and GAS =
version we have (2.17.50)  doesn't have a clue about new mnemonics "rrx =
r0,r0".

I see 3 options to fix this:

1. Ask clang folks to patch llvm to use old mnemonics  ("mov r0, r0, =
rrx" instead of "rrx r0,r0")
2. Maintain same patch for freebsd only
3. patch binutils to support this new mnemonics

Any thoughts how to proceed?

Thanks,

Damjan