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UXTB only Thumb2?
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UXTB only Thumb2?
Offline
Samar Samar
over 7 years ago
Note: This was originally posted on 12th February 2009 at
http://forums.arm.com
Hi All,
Arm9 crashed on UXTB instruction because it is not able to decode it. It caused Undef-Instruction exception.
I have been trying to find if UXTB which is a Thumb2 instruction (only supported on ARMv7 onwards) is also supported by Thumb. In other words can I actually use UXTB instruction on Arm9 (ARMv5)?
Thanks a lot,
Samar
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Offline
Peter Harris
over 7 years ago
+1
verified
Note: This was originally posted on 12th February 2009 at http://forums.arm.com UXTB was added in ARMv6 for both ARM and Thumb. It is also in Thumb2, as Thumb2 is a superset of the original Thumb instruction...
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