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PowerPC gas/ immediate range checking?
- To: binutils at sources dot redhat dot com
- Subject: PowerPC gas/ immediate range checking?
- From: Becky Gill <bgill at ibmoto dot com>
- Date: Fri, 25 May 2001 14:58:51 -0500
- Organization: Motorola Semiconductor Products Sector
I have a question about gas on PowerPC. The assembly instruction
addi r3,r3,0xdead
Generates this warning:
Error: operand out of range (000000000000beef not between -32768 and 32767)
However, this immediate value is perfectly valid for the addi instruction. It
looks as though gas is treating it as unsigned by default, filling in with
zeroes, and then range checking that number. This results in an incorrect
error, since the above instruction is valid.
So, 2 questions:
1) Why is gas implemented as it is currently? Is this intentional?
2) Is there a way to get around this problem when hand-coding assembly?
Thanks!
-B