On Mon, Nov 13, 2017 at 11:20 PM, Jason Ekstrand wrote:
> On November 13, 2017 22:54:02 Matt Turner wrote:
>
>> On Mon, Nov 13, 2017 at 10:06 PM, Jason Ekstrand
>> wrote:
>>>
>>> On Mon, Nov 13, 2017 at 3:23 PM, Matt Turner wrote:
The MOV instruction can extract bytes to words/do
On November 13, 2017 22:54:02 Matt Turner wrote:
On Mon, Nov 13, 2017 at 10:06 PM, Jason Ekstrand wrote:
On Mon, Nov 13, 2017 at 3:23 PM, Matt Turner wrote:
The MOV instruction can extract bytes to words/double words, and
words/double words to quadwords, but not byte to quadwords.
For uns
On Mon, Nov 13, 2017 at 10:06 PM, Jason Ekstrand wrote:
> On Mon, Nov 13, 2017 at 3:23 PM, Matt Turner wrote:
>>
>> The MOV instruction can extract bytes to words/double words, and
>> words/double words to quadwords, but not byte to quadwords.
>>
>> For unsigned byte to quadword, we can read them
On Mon, Nov 13, 2017 at 3:23 PM, Matt Turner wrote:
> The MOV instruction can extract bytes to words/double words, and
> words/double words to quadwords, but not byte to quadwords.
>
> For unsigned byte to quadword, we can read them as words and AND off the
> high byte and extract to quadword in
The MOV instruction can extract bytes to words/double words, and
words/double words to quadwords, but not byte to quadwords.
For unsigned byte to quadword, we can read them as words and AND off the
high byte and extract to quadword in one instruction. For signed bytes,
we need to first sign extend
