On Tue, 3 Jul 2012, Niels Möller wrote:
Martin Storsjö <[email protected]> writes:
Re testing, I tried doing a build on 64 bit OS X, which fails at:
salsa20-crypt.s:364:suffix or operands invalid for `movq'
salsa20-crypt.s:370:suffix or operands invalid for `movq'
That sounds vaguely familiar. I think it has been reported earlier, but
not fixed.
This instruction, "movq %xmm4, %r8" is used to copy the low 64 bits from
an %xmm register to a regular 64-bit register. Any idea on how to write
that in a way which makes the osx assembler happy? I'm not aware of any
other instruction for doing that type of copy, but any reasonable
workaround is appreciated.
If I change it into movd instead of movq, it builds fine on OS X, and the
tests pass.
On Linux, it doesn't seem to break anything either. And if checking the
output with objdump -d, it is encoded into the same opcode (which objdump
reports as movq).
// Martin
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