On 2013-04-07 21:42, Mouse wrote:
You said the ashq ..., -1, ... did disassemble with not sign extended constant,Right. The .s file has $-1 for that operand and the instruction stream generated has 8f ff ff ff ff 00 00 00 00, which is immediate mode with a value of 00000000ffffffff.
In my eyes that definitely looks like a gas bug. Why would gas generate 8f ff ff ff ff 00 00 00 00 for the immediate value -1 for a quad? That is not -1. That's a zero-extended 32-bit -1 into a 64-bit value. Do gas regard the immediate value as unsigned?
Johnny
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