* movq instruction not supported?
@ 2006-09-01 1:39 wizard00
2006-09-05 15:13 ` Ian Lance Taylor
0 siblings, 1 reply; 2+ messages in thread
From: wizard00 @ 2006-09-01 1:39 UTC (permalink / raw)
To: gcc-help
Hi all,
I try to do movq 0x5555555555555555, %es:(%edx)
move quadword to a memory location
but gcc complains error suffix or operand invalid.
what's wrong?
thanks
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* Re: movq instruction not supported?
2006-09-01 1:39 movq instruction not supported? wizard00
@ 2006-09-05 15:13 ` Ian Lance Taylor
0 siblings, 0 replies; 2+ messages in thread
From: Ian Lance Taylor @ 2006-09-05 15:13 UTC (permalink / raw)
To: wizard00; +Cc: gcc-help
wizard00 <sys_eng00@yahoo.com> writes:
> I try to do movq 0x5555555555555555, %es:(%edx)
> move quadword to a memory location
> but gcc complains error suffix or operand invalid.
> what's wrong?
Wrong mailing list. This is not a gcc question. It is a binutils
question. See http://sourceware.org/binutils/
If you want to move a quadword, you need to use %rdx, not %edx.
Ian
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