Re: [Qemu-devel] Add ARM920T to ARM emulation

[Avi Kivity]

Paul Brook wrote:
> B is a direct branch that never changes mode. BX is an indirect branch that 
> mode switches based on the low address bit.
> BL and BLX(register) are exactly the same as B/BX except they also set LR.
> BLX(immediate) is a direct mode switching call.
> loads into the PC either ignore(v4t) or mode switch (v5) on the low address 
> bit.
> ALU writes to the PC always ignore the low bit in Thumb mode. In ARM mode the 
> low bit is either ignored(v6) or used to mode switch (v7).
>
> BX was introduced in v4t, BLX was introduced in v5.
>   

Does no sane instruction set exist?

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error compiling committee.c: too many arguments to function